if_bwi.c

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    1 /*
    2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
    3  * 
    4  * This code is derived from software contributed to The DragonFly Project
    5  * by Sepherosa Ziehau <sepherosa@gmail.com>
    6  * 
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in
   15  *    the documentation and/or other materials provided with the
   16  *    distribution.
   17  * 3. Neither the name of The DragonFly Project nor the names of its
   18  *    contributors may be used to endorse or promote products derived
   19  *    from this software without specific, prior written permission.
   20  * 
   21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
   25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
   27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   32  * SUCH DAMAGE.
   33  * 
   34  * $DragonFly: src/sys/dev/netif/bwi/if_bwi.c,v 1.19 2008/02/15 11:15:38 sephe Exp $
   35  */
   36 
   37 #include <sys/cdefs.h>
   38 __FBSDID("$FreeBSD: releng/8.0/sys/dev/bwi/if_bwi.c 193310 2009-06-02 16:48:10Z imp $");
   39 
   40 #include "opt_inet.h"
   41 #include "opt_bwi.h"
   42 
   43 #include <sys/param.h>
   44 #include <sys/endian.h>
   45 #include <sys/kernel.h>
   46 #include <sys/bus.h>
   47 #include <sys/malloc.h>
   48 #include <sys/proc.h>
   49 #include <sys/rman.h>
   50 #include <sys/socket.h>
   51 #include <sys/sockio.h>
   52 #include <sys/sysctl.h>
   53 #include <sys/systm.h>
   54 #include <sys/taskqueue.h>
   55  
   56 #include <net/if.h>
   57 #include <net/if_dl.h>
   58 #include <net/if_media.h>
   59 #include <net/if_types.h>
   60 #include <net/if_arp.h>
   61 #include <net/ethernet.h>
   62 #include <net/if_llc.h>
   63 
   64 #include <net80211/ieee80211_var.h>
   65 #include <net80211/ieee80211_radiotap.h>
   66 #include <net80211/ieee80211_regdomain.h>
   67 #include <net80211/ieee80211_amrr.h>
   68 #include <net80211/ieee80211_phy.h>
   69 
   70 #include <net/bpf.h>
   71 
   72 #ifdef INET
   73 #include <netinet/in.h> 
   74 #include <netinet/if_ether.h>
   75 #endif
   76 
   77 #include <machine/bus.h>
   78 
   79 #include <dev/pci/pcivar.h>
   80 #include <dev/pci/pcireg.h>
   81 
   82 #include <dev/bwi/bitops.h>
   83 #include <dev/bwi/if_bwireg.h>
   84 #include <dev/bwi/if_bwivar.h>
   85 #include <dev/bwi/bwimac.h>
   86 #include <dev/bwi/bwirf.h>
   87 
   88 struct bwi_clock_freq {
   89         u_int           clkfreq_min;
   90         u_int           clkfreq_max;
   91 };
   92 
   93 struct bwi_myaddr_bssid {
   94         uint8_t         myaddr[IEEE80211_ADDR_LEN];
   95         uint8_t         bssid[IEEE80211_ADDR_LEN];
   96 } __packed;
   97 
   98 static struct ieee80211vap *bwi_vap_create(struct ieee80211com *,
   99                    const char [IFNAMSIZ], int, int, int,
  100                    const uint8_t [IEEE80211_ADDR_LEN],
  101                    const uint8_t [IEEE80211_ADDR_LEN]);
  102 static void     bwi_vap_delete(struct ieee80211vap *);
  103 static void     bwi_init(void *);
  104 static int      bwi_ioctl(struct ifnet *, u_long, caddr_t);
  105 static void     bwi_start(struct ifnet *);
  106 static void     bwi_start_locked(struct ifnet *);
  107 static int      bwi_raw_xmit(struct ieee80211_node *, struct mbuf *,
  108                         const struct ieee80211_bpf_params *);
  109 static void     bwi_watchdog(struct ifnet *);
  110 static void     bwi_scan_start(struct ieee80211com *);
  111 static void     bwi_set_channel(struct ieee80211com *);
  112 static void     bwi_scan_end(struct ieee80211com *);
  113 static int      bwi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
  114 static void     bwi_updateslot(struct ifnet *);
  115 static struct ieee80211_node *bwi_node_alloc(struct ieee80211vap *,
  116                     const uint8_t [IEEE80211_ADDR_LEN]);
  117 static void     bwi_newassoc(struct ieee80211_node *, int);
  118 static int      bwi_media_change(struct ifnet *);
  119 
  120 static void     bwi_calibrate(void *);
  121 
  122 static int      bwi_calc_rssi(struct bwi_softc *, const struct bwi_rxbuf_hdr *);
  123 static int      bwi_calc_noise(struct bwi_softc *);
  124 static __inline uint8_t bwi_ofdm_plcp2rate(const uint32_t *);
  125 static __inline uint8_t bwi_ds_plcp2rate(const struct ieee80211_ds_plcp_hdr *);
  126 static void     bwi_rx_radiotap(struct bwi_softc *, struct mbuf *,
  127                         struct bwi_rxbuf_hdr *, const void *, int, int, int);
  128 
  129 static void     bwi_restart(void *, int);
  130 static void     bwi_init_statechg(struct bwi_softc *, int);
  131 static void     bwi_stop(struct bwi_softc *, int);
  132 static void     bwi_stop_locked(struct bwi_softc *, int);
  133 static int      bwi_newbuf(struct bwi_softc *, int, int);
  134 static int      bwi_encap(struct bwi_softc *, int, struct mbuf *,
  135                           struct ieee80211_node *);
  136 static int      bwi_encap_raw(struct bwi_softc *, int, struct mbuf *,
  137                           struct ieee80211_node *,
  138                           const struct ieee80211_bpf_params *);
  139 
  140 static void     bwi_init_rxdesc_ring32(struct bwi_softc *, uint32_t,
  141                                        bus_addr_t, int, int);
  142 static void     bwi_reset_rx_ring32(struct bwi_softc *, uint32_t);
  143 
  144 static int      bwi_init_tx_ring32(struct bwi_softc *, int);
  145 static int      bwi_init_rx_ring32(struct bwi_softc *);
  146 static int      bwi_init_txstats32(struct bwi_softc *);
  147 static void     bwi_free_tx_ring32(struct bwi_softc *, int);
  148 static void     bwi_free_rx_ring32(struct bwi_softc *);
  149 static void     bwi_free_txstats32(struct bwi_softc *);
  150 static void     bwi_setup_rx_desc32(struct bwi_softc *, int, bus_addr_t, int);
  151 static void     bwi_setup_tx_desc32(struct bwi_softc *, struct bwi_ring_data *,
  152                                     int, bus_addr_t, int);
  153 static int      bwi_rxeof32(struct bwi_softc *);
  154 static void     bwi_start_tx32(struct bwi_softc *, uint32_t, int);
  155 static void     bwi_txeof_status32(struct bwi_softc *);
  156 
  157 static int      bwi_init_tx_ring64(struct bwi_softc *, int);
  158 static int      bwi_init_rx_ring64(struct bwi_softc *);
  159 static int      bwi_init_txstats64(struct bwi_softc *);
  160 static void     bwi_free_tx_ring64(struct bwi_softc *, int);
  161 static void     bwi_free_rx_ring64(struct bwi_softc *);
  162 static void     bwi_free_txstats64(struct bwi_softc *);
  163 static void     bwi_setup_rx_desc64(struct bwi_softc *, int, bus_addr_t, int);
  164 static void     bwi_setup_tx_desc64(struct bwi_softc *, struct bwi_ring_data *,
  165                                     int, bus_addr_t, int);
  166 static int      bwi_rxeof64(struct bwi_softc *);
  167 static void     bwi_start_tx64(struct bwi_softc *, uint32_t, int);
  168 static void     bwi_txeof_status64(struct bwi_softc *);
  169 
  170 static int      bwi_rxeof(struct bwi_softc *, int);
  171 static void     _bwi_txeof(struct bwi_softc *, uint16_t, int, int);
  172 static void     bwi_txeof(struct bwi_softc *);
  173 static void     bwi_txeof_status(struct bwi_softc *, int);
  174 static void     bwi_enable_intrs(struct bwi_softc *, uint32_t);
  175 static void     bwi_disable_intrs(struct bwi_softc *, uint32_t);
  176 
  177 static int      bwi_dma_alloc(struct bwi_softc *);
  178 static void     bwi_dma_free(struct bwi_softc *);
  179 static int      bwi_dma_ring_alloc(struct bwi_softc *, bus_dma_tag_t,
  180                                    struct bwi_ring_data *, bus_size_t,
  181                                    uint32_t);
  182 static int      bwi_dma_mbuf_create(struct bwi_softc *);
  183 static void     bwi_dma_mbuf_destroy(struct bwi_softc *, int, int);
  184 static int      bwi_dma_txstats_alloc(struct bwi_softc *, uint32_t, bus_size_t);
  185 static void     bwi_dma_txstats_free(struct bwi_softc *);
  186 static void     bwi_dma_ring_addr(void *, bus_dma_segment_t *, int, int);
  187 static void     bwi_dma_buf_addr(void *, bus_dma_segment_t *, int,
  188                                  bus_size_t, int);
  189 
  190 static void     bwi_power_on(struct bwi_softc *, int);
  191 static int      bwi_power_off(struct bwi_softc *, int);
  192 static int      bwi_set_clock_mode(struct bwi_softc *, enum bwi_clock_mode);
  193 static int      bwi_set_clock_delay(struct bwi_softc *);
  194 static void     bwi_get_clock_freq(struct bwi_softc *, struct bwi_clock_freq *);
  195 static int      bwi_get_pwron_delay(struct bwi_softc *sc);
  196 static void     bwi_set_addr_filter(struct bwi_softc *, uint16_t,
  197                                     const uint8_t *);
  198 static void     bwi_set_bssid(struct bwi_softc *, const uint8_t *);
  199 
  200 static void     bwi_get_card_flags(struct bwi_softc *);
  201 static void     bwi_get_eaddr(struct bwi_softc *, uint16_t, uint8_t *);
  202 
  203 static int      bwi_bus_attach(struct bwi_softc *);
  204 static int      bwi_bbp_attach(struct bwi_softc *);
  205 static int      bwi_bbp_power_on(struct bwi_softc *, enum bwi_clock_mode);
  206 static void     bwi_bbp_power_off(struct bwi_softc *);
  207 
  208 static const char *bwi_regwin_name(const struct bwi_regwin *);
  209 static uint32_t bwi_regwin_disable_bits(struct bwi_softc *);
  210 static void     bwi_regwin_info(struct bwi_softc *, uint16_t *, uint8_t *);
  211 static int      bwi_regwin_select(struct bwi_softc *, int);
  212 
  213 static void     bwi_led_attach(struct bwi_softc *);
  214 static void     bwi_led_newstate(struct bwi_softc *, enum ieee80211_state);
  215 static void     bwi_led_event(struct bwi_softc *, int);
  216 static void     bwi_led_blink_start(struct bwi_softc *, int, int);
  217 static void     bwi_led_blink_next(void *);
  218 static void     bwi_led_blink_end(void *);
  219 
  220 static const struct {
  221         uint16_t        did_min;
  222         uint16_t        did_max;
  223         uint16_t        bbp_id;
  224 } bwi_bbpid_map[] = {
  225         { 0x4301, 0x4301, 0x4301 },
  226         { 0x4305, 0x4307, 0x4307 },
  227         { 0x4403, 0x4403, 0x4402 },
  228         { 0x4610, 0x4615, 0x4610 },
  229         { 0x4710, 0x4715, 0x4710 },
  230         { 0x4720, 0x4725, 0x4309 }
  231 };
  232 
  233 static const struct {
  234         uint16_t        bbp_id;
  235         int             nregwin;
  236 } bwi_regwin_count[] = {
  237         { 0x4301, 5 },
  238         { 0x4306, 6 },
  239         { 0x4307, 5 },
  240         { 0x4310, 8 },
  241         { 0x4401, 3 },
  242         { 0x4402, 3 },
  243         { 0x4610, 9 },
  244         { 0x4704, 9 },
  245         { 0x4710, 9 },
  246         { 0x5365, 7 }
  247 };
  248 
  249 #define CLKSRC(src)                             \
  250 [BWI_CLKSRC_ ## src] = {                        \
  251         .freq_min = BWI_CLKSRC_ ##src## _FMIN,  \
  252         .freq_max = BWI_CLKSRC_ ##src## _FMAX   \
  253 }
  254 
  255 static const struct {
  256         u_int   freq_min;
  257         u_int   freq_max;
  258 } bwi_clkfreq[BWI_CLKSRC_MAX] = {
  259         CLKSRC(LP_OSC),
  260         CLKSRC(CS_OSC),
  261         CLKSRC(PCI)
  262 };
  263 
  264 #undef CLKSRC
  265 
  266 #define VENDOR_LED_ACT(vendor)                          \
  267 {                                                       \
  268         .vid = PCI_VENDOR_##vendor,                     \
  269         .led_act = { BWI_VENDOR_LED_ACT_##vendor }      \
  270 }
  271 
  272 static const struct {
  273 #define PCI_VENDOR_COMPAQ       0x0e11
  274 #define PCI_VENDOR_LINKSYS      0x1737
  275         uint16_t        vid;
  276         uint8_t         led_act[BWI_LED_MAX];
  277 } bwi_vendor_led_act[] = {
  278         VENDOR_LED_ACT(COMPAQ),
  279         VENDOR_LED_ACT(LINKSYS)
  280 #undef PCI_VENDOR_LINKSYS
  281 #undef PCI_VENDOR_COMPAQ
  282 };
  283 
  284 static const uint8_t bwi_default_led_act[BWI_LED_MAX] =
  285         { BWI_VENDOR_LED_ACT_DEFAULT };
  286 
  287 #undef VENDOR_LED_ACT
  288 
  289 static const struct {
  290         int     on_dur;
  291         int     off_dur;
  292 } bwi_led_duration[109] = {
  293         [0]     = { 400, 100 },
  294         [2]     = { 150, 75 },
  295         [4]     = { 90, 45 },
  296         [11]    = { 66, 34 },
  297         [12]    = { 53, 26 },
  298         [18]    = { 42, 21 },
  299         [22]    = { 35, 17 },
  300         [24]    = { 32, 16 },
  301         [36]    = { 21, 10 },
  302         [48]    = { 16, 8 },
  303         [72]    = { 11, 5 },
  304         [96]    = { 9, 4 },
  305         [108]   = { 7, 3 }
  306 };
  307 
  308 #ifdef BWI_DEBUG
  309 #ifdef BWI_DEBUG_VERBOSE
  310 static uint32_t bwi_debug = BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_TXPOWER;
  311 #else
  312 static uint32_t bwi_debug;
  313 #endif
  314 TUNABLE_INT("hw.bwi.debug", (int *)&bwi_debug);
  315 #endif  /* BWI_DEBUG */
  316 
  317 static const uint8_t bwi_zero_addr[IEEE80211_ADDR_LEN];
  318 
  319 uint16_t
  320 bwi_read_sprom(struct bwi_softc *sc, uint16_t ofs)
  321 {
  322         return CSR_READ_2(sc, ofs + BWI_SPROM_START);
  323 }
  324 
  325 static __inline void
  326 bwi_setup_desc32(struct bwi_softc *sc, struct bwi_desc32 *desc_array,
  327                  int ndesc, int desc_idx, bus_addr_t paddr, int buf_len,
  328                  int tx)
  329 {
  330         struct bwi_desc32 *desc = &desc_array[desc_idx];
  331         uint32_t ctrl, addr, addr_hi, addr_lo;
  332 
  333         addr_lo = __SHIFTOUT(paddr, BWI_DESC32_A_ADDR_MASK);
  334         addr_hi = __SHIFTOUT(paddr, BWI_DESC32_A_FUNC_MASK);
  335 
  336         addr = __SHIFTIN(addr_lo, BWI_DESC32_A_ADDR_MASK) |
  337                __SHIFTIN(BWI_DESC32_A_FUNC_TXRX, BWI_DESC32_A_FUNC_MASK);
  338 
  339         ctrl = __SHIFTIN(buf_len, BWI_DESC32_C_BUFLEN_MASK) |
  340                __SHIFTIN(addr_hi, BWI_DESC32_C_ADDRHI_MASK);
  341         if (desc_idx == ndesc - 1)
  342                 ctrl |= BWI_DESC32_C_EOR;
  343         if (tx) {
  344                 /* XXX */
  345                 ctrl |= BWI_DESC32_C_FRAME_START |
  346                         BWI_DESC32_C_FRAME_END |
  347                         BWI_DESC32_C_INTR;
  348         }
  349 
  350         desc->addr = htole32(addr);
  351         desc->ctrl = htole32(ctrl);
  352 }
  353 
  354 int
  355 bwi_attach(struct bwi_softc *sc)
  356 {
  357         struct ieee80211com *ic;
  358         device_t dev = sc->sc_dev;
  359         struct ifnet *ifp;
  360         struct bwi_mac *mac;
  361         struct bwi_phy *phy;
  362         int i, error;
  363         uint8_t bands;
  364         uint8_t macaddr[IEEE80211_ADDR_LEN];
  365 
  366         BWI_LOCK_INIT(sc);
  367 
  368         /*
  369          * Initialize taskq and various tasks
  370          */
  371         sc->sc_tq = taskqueue_create("bwi_taskq", M_NOWAIT | M_ZERO,
  372                 taskqueue_thread_enqueue, &sc->sc_tq);
  373         taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
  374                 device_get_nameunit(dev));
  375         TASK_INIT(&sc->sc_restart_task, 0, bwi_restart, sc);
  376 
  377         callout_init_mtx(&sc->sc_calib_ch, &sc->sc_mtx, 0);
  378 
  379         /*
  380          * Initialize sysctl variables
  381          */
  382         sc->sc_fw_version = BWI_FW_VERSION3;
  383         sc->sc_led_idle = (2350 * hz) / 1000;
  384         sc->sc_led_blink = 1;
  385         sc->sc_txpwr_calib = 1;
  386 #ifdef BWI_DEBUG
  387         sc->sc_debug = bwi_debug;
  388 #endif
  389         bwi_power_on(sc, 1);
  390 
  391         error = bwi_bbp_attach(sc);
  392         if (error)
  393                 goto fail;
  394 
  395         error = bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
  396         if (error)
  397                 goto fail;
  398 
  399         if (BWI_REGWIN_EXIST(&sc->sc_com_regwin)) {
  400                 error = bwi_set_clock_delay(sc);
  401                 if (error)
  402                         goto fail;
  403 
  404                 error = bwi_set_clock_mode(sc, BWI_CLOCK_MODE_FAST);
  405                 if (error)
  406                         goto fail;
  407 
  408                 error = bwi_get_pwron_delay(sc);
  409                 if (error)
  410                         goto fail;
  411         }
  412 
  413         error = bwi_bus_attach(sc);
  414         if (error)
  415                 goto fail;
  416 
  417         bwi_get_card_flags(sc);
  418 
  419         bwi_led_attach(sc);
  420 
  421         for (i = 0; i < sc->sc_nmac; ++i) {
  422                 struct bwi_regwin *old;
  423 
  424                 mac = &sc->sc_mac[i];
  425                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old);
  426                 if (error)
  427                         goto fail;
  428 
  429                 error = bwi_mac_lateattach(mac);
  430                 if (error)
  431                         goto fail;
  432 
  433                 error = bwi_regwin_switch(sc, old, NULL);
  434                 if (error)
  435                         goto fail;
  436         }
  437 
  438         /*
  439          * XXX First MAC is known to exist
  440          * TODO2
  441          */
  442         mac = &sc->sc_mac[0];
  443         phy = &mac->mac_phy;
  444 
  445         bwi_bbp_power_off(sc);
  446 
  447         error = bwi_dma_alloc(sc);
  448         if (error)
  449                 goto fail;
  450 
  451         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
  452         if (ifp == NULL) {
  453                 device_printf(dev, "can not if_alloc()\n");
  454                 error = ENOSPC;
  455                 goto fail;
  456         }
  457         ic = ifp->if_l2com;
  458 
  459         /* set these up early for if_printf use */
  460         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
  461 
  462         ifp->if_softc = sc;
  463         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
  464         ifp->if_init = bwi_init;
  465         ifp->if_ioctl = bwi_ioctl;
  466         ifp->if_start = bwi_start;
  467         ifp->if_watchdog = bwi_watchdog;
  468         IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
  469         ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
  470         IFQ_SET_READY(&ifp->if_snd);
  471 
  472         /*
  473          * Setup ratesets, phytype, channels and get MAC address
  474          */
  475         bands = 0;
  476         if (phy->phy_mode == IEEE80211_MODE_11B ||
  477             phy->phy_mode == IEEE80211_MODE_11G) {
  478                 setbit(&bands, IEEE80211_MODE_11B);
  479                 if (phy->phy_mode == IEEE80211_MODE_11B) {
  480                         ic->ic_phytype = IEEE80211_T_DS;
  481                 } else {
  482                         ic->ic_phytype = IEEE80211_T_OFDM;
  483                         setbit(&bands, IEEE80211_MODE_11G);
  484                 }
  485 
  486                 bwi_get_eaddr(sc, BWI_SPROM_11BG_EADDR, macaddr);
  487                 if (IEEE80211_IS_MULTICAST(macaddr)) {
  488                         bwi_get_eaddr(sc, BWI_SPROM_11A_EADDR, macaddr);
  489                         if (IEEE80211_IS_MULTICAST(macaddr)) {
  490                                 device_printf(dev,
  491                                     "invalid MAC address: %6D\n",
  492                                     macaddr, ":");
  493                         }
  494                 }
  495         } else if (phy->phy_mode == IEEE80211_MODE_11A) {
  496                 /* TODO:11A */
  497                 setbit(&bands, IEEE80211_MODE_11A);
  498                 error = ENXIO;
  499                 goto fail;
  500         } else {
  501                 panic("unknown phymode %d\n", phy->phy_mode);
  502         }
  503 
  504         /* Get locale */
  505         sc->sc_locale = __SHIFTOUT(bwi_read_sprom(sc, BWI_SPROM_CARD_INFO),
  506                                    BWI_SPROM_CARD_INFO_LOCALE);
  507         DPRINTF(sc, BWI_DBG_ATTACH, "locale: %d\n", sc->sc_locale);
  508         /* XXX use locale */
  509         ieee80211_init_channels(ic, NULL, &bands);
  510 
  511         ic->ic_ifp = ifp;
  512         ic->ic_caps = IEEE80211_C_STA |
  513                       IEEE80211_C_SHSLOT |
  514                       IEEE80211_C_SHPREAMBLE |
  515                       IEEE80211_C_WPA |
  516                       IEEE80211_C_BGSCAN |
  517                       IEEE80211_C_MONITOR;
  518         ic->ic_opmode = IEEE80211_M_STA;
  519         ieee80211_ifattach(ic, macaddr);
  520 
  521         ic->ic_headroom = sizeof(struct bwi_txbuf_hdr);
  522 
  523         /* override default methods */
  524         ic->ic_vap_create = bwi_vap_create;
  525         ic->ic_vap_delete = bwi_vap_delete;
  526         ic->ic_raw_xmit = bwi_raw_xmit;
  527         ic->ic_updateslot = bwi_updateslot;
  528         ic->ic_node_alloc = bwi_node_alloc;
  529         ic->ic_scan_start = bwi_scan_start;
  530         ic->ic_scan_end = bwi_scan_end;
  531         ic->ic_set_channel = bwi_set_channel;
  532 
  533         sc->sc_rates = ieee80211_get_ratetable(ic->ic_curchan);
  534 
  535         ieee80211_radiotap_attach(ic,
  536             &sc->sc_tx_th.wt_ihdr, sizeof(sc->sc_tx_th),
  537                 BWI_TX_RADIOTAP_PRESENT,
  538             &sc->sc_rx_th.wr_ihdr, sizeof(sc->sc_rx_th),
  539                 BWI_RX_RADIOTAP_PRESENT);
  540 
  541         /*
  542          * Add sysctl nodes
  543          */
  544         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
  545                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
  546                         "fw_version", CTLFLAG_RD, &sc->sc_fw_version, 0,
  547                         "Firmware version");
  548         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
  549                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
  550                         "led_idle", CTLFLAG_RW, &sc->sc_led_idle, 0,
  551                         "# ticks before LED enters idle state");
  552         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
  553                        SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
  554                        "led_blink", CTLFLAG_RW, &sc->sc_led_blink, 0,
  555                        "Allow LED to blink");
  556         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
  557                        SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
  558                        "txpwr_calib", CTLFLAG_RW, &sc->sc_txpwr_calib, 0,
  559                        "Enable software TX power calibration");
  560 #ifdef BWI_DEBUG
  561         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
  562                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
  563                         "debug", CTLFLAG_RW, &sc->sc_debug, 0, "Debug flags");
  564 #endif
  565         if (bootverbose)
  566                 ieee80211_announce(ic);
  567 
  568         return (0);
  569 fail:
  570         BWI_LOCK_DESTROY(sc);
  571         return (error);
  572 }
  573 
  574 int
  575 bwi_detach(struct bwi_softc *sc)
  576 {
  577         struct ifnet *ifp = sc->sc_ifp;
  578         struct ieee80211com *ic = ifp->if_l2com;
  579         int i;
  580 
  581         bwi_stop(sc, 1);
  582         callout_drain(&sc->sc_led_blink_ch);
  583         callout_drain(&sc->sc_calib_ch);
  584         ieee80211_ifdetach(ic);
  585 
  586         for (i = 0; i < sc->sc_nmac; ++i)
  587                 bwi_mac_detach(&sc->sc_mac[i]);
  588         bwi_dma_free(sc);
  589         if_free(ifp);
  590         taskqueue_free(sc->sc_tq);
  591 
  592         BWI_LOCK_DESTROY(sc);
  593 
  594         return (0);
  595 }
  596 
  597 static struct ieee80211vap *
  598 bwi_vap_create(struct ieee80211com *ic,
  599         const char name[IFNAMSIZ], int unit, int opmode, int flags,
  600         const uint8_t bssid[IEEE80211_ADDR_LEN],
  601         const uint8_t mac[IEEE80211_ADDR_LEN])
  602 {
  603         struct bwi_vap *bvp;
  604         struct ieee80211vap *vap;
  605 
  606         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
  607                 return NULL;
  608         bvp = (struct bwi_vap *) malloc(sizeof(struct bwi_vap),
  609             M_80211_VAP, M_WAITOK | M_ZERO);
  610         if (bvp == NULL)
  611                 return NULL;
  612         vap = &bvp->bv_vap;
  613         /* enable s/w bmiss handling for sta mode */
  614         ieee80211_vap_setup(ic, vap, name, unit, opmode,
  615             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
  616 
  617         /* override default methods */
  618         bvp->bv_newstate = vap->iv_newstate;
  619         vap->iv_newstate = bwi_newstate;
  620 #if 0
  621         vap->iv_update_beacon = bwi_beacon_update;
  622 #endif
  623         ieee80211_amrr_init(&bvp->bv_amrr, vap,
  624             IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD,
  625             IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD,
  626             500 /*ms*/);
  627 
  628         /* complete setup */
  629         ieee80211_vap_attach(vap, bwi_media_change, ieee80211_media_status);
  630         ic->ic_opmode = opmode;
  631         return vap;
  632 }
  633 
  634 static void
  635 bwi_vap_delete(struct ieee80211vap *vap)
  636 {
  637         struct bwi_vap *bvp = BWI_VAP(vap);
  638 
  639         ieee80211_amrr_cleanup(&bvp->bv_amrr);
  640         ieee80211_vap_detach(vap);
  641         free(bvp, M_80211_VAP);
  642 }
  643 
  644 void
  645 bwi_suspend(struct bwi_softc *sc)
  646 {
  647         bwi_stop(sc, 1);
  648 }
  649 
  650 void
  651 bwi_resume(struct bwi_softc *sc)
  652 {
  653         struct ifnet *ifp = sc->sc_ifp;
  654 
  655         if (ifp->if_flags & IFF_UP)
  656                 bwi_init(sc);
  657 }
  658 
  659 int
  660 bwi_shutdown(struct bwi_softc *sc)
  661 {
  662         bwi_stop(sc, 1);
  663         return 0;
  664 }
  665 
  666 static void
  667 bwi_power_on(struct bwi_softc *sc, int with_pll)
  668 {
  669         uint32_t gpio_in, gpio_out, gpio_en;
  670         uint16_t status;
  671 
  672         gpio_in = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4);
  673         if (gpio_in & BWI_PCIM_GPIO_PWR_ON)
  674                 goto back;
  675 
  676         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
  677         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
  678 
  679         gpio_out |= BWI_PCIM_GPIO_PWR_ON;
  680         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
  681         if (with_pll) {
  682                 /* Turn off PLL first */
  683                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
  684                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
  685         }
  686 
  687         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
  688         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
  689         DELAY(1000);
  690 
  691         if (with_pll) {
  692                 /* Turn on PLL */
  693                 gpio_out &= ~BWI_PCIM_GPIO_PLL_PWR_OFF;
  694                 pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
  695                 DELAY(5000);
  696         }
  697 
  698 back:
  699         /* Clear "Signaled Target Abort" */
  700         status = pci_read_config(sc->sc_dev, PCIR_STATUS, 2);
  701         status &= ~PCIM_STATUS_STABORT;
  702         pci_write_config(sc->sc_dev, PCIR_STATUS, status, 2);
  703 }
  704 
  705 static int
  706 bwi_power_off(struct bwi_softc *sc, int with_pll)
  707 {
  708         uint32_t gpio_out, gpio_en;
  709 
  710         pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4); /* dummy read */
  711         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
  712         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
  713 
  714         gpio_out &= ~BWI_PCIM_GPIO_PWR_ON;
  715         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
  716         if (with_pll) {
  717                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
  718                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
  719         }
  720 
  721         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
  722         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
  723         return 0;
  724 }
  725 
  726 int
  727 bwi_regwin_switch(struct bwi_softc *sc, struct bwi_regwin *rw,
  728                   struct bwi_regwin **old_rw)
  729 {
  730         int error;
  731 
  732         if (old_rw != NULL)
  733                 *old_rw = NULL;
  734 
  735         if (!BWI_REGWIN_EXIST(rw))
  736                 return EINVAL;
  737 
  738         if (sc->sc_cur_regwin != rw) {
  739                 error = bwi_regwin_select(sc, rw->rw_id);
  740                 if (error) {
  741                         device_printf(sc->sc_dev, "can't select regwin %d\n",
  742                                   rw->rw_id);
  743                         return error;
  744                 }
  745         }
  746 
  747         if (old_rw != NULL)
  748                 *old_rw = sc->sc_cur_regwin;
  749         sc->sc_cur_regwin = rw;
  750         return 0;
  751 }
  752 
  753 static int
  754 bwi_regwin_select(struct bwi_softc *sc, int id)
  755 {
  756         uint32_t win = BWI_PCIM_REGWIN(id);
  757         int i;
  758 
  759 #define RETRY_MAX       50
  760         for (i = 0; i < RETRY_MAX; ++i) {
  761                 pci_write_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, win, 4);
  762                 if (pci_read_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, 4) == win)
  763                         return 0;
  764                 DELAY(10);
  765         }
  766 #undef RETRY_MAX
  767 
  768         return ENXIO;
  769 }
  770 
  771 static void
  772 bwi_regwin_info(struct bwi_softc *sc, uint16_t *type, uint8_t *rev)
  773 {
  774         uint32_t val;
  775 
  776         val = CSR_READ_4(sc, BWI_ID_HI);
  777         *type = BWI_ID_HI_REGWIN_TYPE(val);
  778         *rev = BWI_ID_HI_REGWIN_REV(val);
  779 
  780         DPRINTF(sc, BWI_DBG_ATTACH, "regwin: type 0x%03x, rev %d, "
  781                 "vendor 0x%04x\n", *type, *rev,
  782                 __SHIFTOUT(val, BWI_ID_HI_REGWIN_VENDOR_MASK));
  783 }
  784 
  785 static int
  786 bwi_bbp_attach(struct bwi_softc *sc)
  787 {
  788 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
  789         uint16_t bbp_id, rw_type;
  790         uint8_t rw_rev;
  791         uint32_t info;
  792         int error, nregwin, i;
  793 
  794         /*
  795          * Get 0th regwin information
  796          * NOTE: 0th regwin should exist
  797          */
  798         error = bwi_regwin_select(sc, 0);
  799         if (error) {
  800                 device_printf(sc->sc_dev, "can't select regwin 0\n");
  801                 return error;
  802         }
  803         bwi_regwin_info(sc, &rw_type, &rw_rev);
  804 
  805         /*
  806          * Find out BBP id
  807          */
  808         bbp_id = 0;
  809         info = 0;
  810         if (rw_type == BWI_REGWIN_T_COM) {
  811                 info = CSR_READ_4(sc, BWI_INFO);
  812                 bbp_id = __SHIFTOUT(info, BWI_INFO_BBPID_MASK);
  813 
  814                 BWI_CREATE_REGWIN(&sc->sc_com_regwin, 0, rw_type, rw_rev);
  815 
  816                 sc->sc_cap = CSR_READ_4(sc, BWI_CAPABILITY);
  817         } else {
  818                 for (i = 0; i < N(bwi_bbpid_map); ++i) {
  819                         if (sc->sc_pci_did >= bwi_bbpid_map[i].did_min &&
  820                             sc->sc_pci_did <= bwi_bbpid_map[i].did_max) {
  821                                 bbp_id = bwi_bbpid_map[i].bbp_id;
  822                                 break;
  823                         }
  824                 }
  825                 if (bbp_id == 0) {
  826                         device_printf(sc->sc_dev, "no BBP id for device id "
  827                                       "0x%04x\n", sc->sc_pci_did);
  828                         return ENXIO;
  829                 }
  830 
  831                 info = __SHIFTIN(sc->sc_pci_revid, BWI_INFO_BBPREV_MASK) |
  832                        __SHIFTIN(0, BWI_INFO_BBPPKG_MASK);
  833         }
  834 
  835         /*
  836          * Find out number of regwins
  837          */
  838         nregwin = 0;
  839         if (rw_type == BWI_REGWIN_T_COM && rw_rev >= 4) {
  840                 nregwin = __SHIFTOUT(info, BWI_INFO_NREGWIN_MASK);
  841         } else {
  842                 for (i = 0; i < N(bwi_regwin_count); ++i) {
  843                         if (bwi_regwin_count[i].bbp_id == bbp_id) {
  844                                 nregwin = bwi_regwin_count[i].nregwin;
  845                                 break;
  846                         }
  847                 }
  848                 if (nregwin == 0) {
  849                         device_printf(sc->sc_dev, "no number of win for "
  850                                       "BBP id 0x%04x\n", bbp_id);
  851                         return ENXIO;
  852                 }
  853         }
  854 
  855         /* Record BBP id/rev for later using */
  856         sc->sc_bbp_id = bbp_id;
  857         sc->sc_bbp_rev = __SHIFTOUT(info, BWI_INFO_BBPREV_MASK);
  858         sc->sc_bbp_pkg = __SHIFTOUT(info, BWI_INFO_BBPPKG_MASK);
  859         device_printf(sc->sc_dev, "BBP: id 0x%04x, rev 0x%x, pkg %d\n",
  860                       sc->sc_bbp_id, sc->sc_bbp_rev, sc->sc_bbp_pkg);
  861 
  862         DPRINTF(sc, BWI_DBG_ATTACH, "nregwin %d, cap 0x%08x\n",
  863                 nregwin, sc->sc_cap);
  864 
  865         /*
  866          * Create rest of the regwins
  867          */
  868 
  869         /* Don't re-create common regwin, if it is already created */
  870         i = BWI_REGWIN_EXIST(&sc->sc_com_regwin) ? 1 : 0;
  871 
  872         for (; i < nregwin; ++i) {
  873                 /*
  874                  * Get regwin information
  875                  */
  876                 error = bwi_regwin_select(sc, i);
  877                 if (error) {
  878                         device_printf(sc->sc_dev,
  879                                       "can't select regwin %d\n", i);
  880                         return error;
  881                 }
  882                 bwi_regwin_info(sc, &rw_type, &rw_rev);
  883 
  884                 /*
  885                  * Try attach:
  886                  * 1) Bus (PCI/PCIE) regwin
  887                  * 2) MAC regwin
  888                  * Ignore rest types of regwin
  889                  */
  890                 if (rw_type == BWI_REGWIN_T_BUSPCI ||
  891                     rw_type == BWI_REGWIN_T_BUSPCIE) {
  892                         if (BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
  893                                 device_printf(sc->sc_dev,
  894                                               "bus regwin already exists\n");
  895                         } else {
  896                                 BWI_CREATE_REGWIN(&sc->sc_bus_regwin, i,
  897                                                   rw_type, rw_rev);
  898                         }
  899                 } else if (rw_type == BWI_REGWIN_T_MAC) {
  900                         /* XXX ignore return value */
  901                         bwi_mac_attach(sc, i, rw_rev);
  902                 }
  903         }
  904 
  905         /* At least one MAC shold exist */
  906         if (!BWI_REGWIN_EXIST(&sc->sc_mac[0].mac_regwin)) {
  907                 device_printf(sc->sc_dev, "no MAC was found\n");
  908                 return ENXIO;
  909         }
  910         KASSERT(sc->sc_nmac > 0, ("no mac's"));
  911 
  912         /* Bus regwin must exist */
  913         if (!BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
  914                 device_printf(sc->sc_dev, "no bus regwin was found\n");
  915                 return ENXIO;
  916         }
  917 
  918         /* Start with first MAC */
  919         error = bwi_regwin_switch(sc, &sc->sc_mac[0].mac_regwin, NULL);
  920         if (error)
  921                 return error;
  922 
  923         return 0;
  924 #undef N
  925 }
  926 
  927 int
  928 bwi_bus_init(struct bwi_softc *sc, struct bwi_mac *mac)
  929 {
  930         struct bwi_regwin *old, *bus;
  931         uint32_t val;
  932         int error;
  933 
  934         bus = &sc->sc_bus_regwin;
  935         KASSERT(sc->sc_cur_regwin == &mac->mac_regwin, ("not cur regwin"));
  936 
  937         /*
  938          * Tell bus to generate requested interrupts
  939          */
  940         if (bus->rw_rev < 6 && bus->rw_type == BWI_REGWIN_T_BUSPCI) {
  941                 /*
  942                  * NOTE: Read BWI_FLAGS from MAC regwin
  943                  */
  944                 val = CSR_READ_4(sc, BWI_FLAGS);
  945 
  946                 error = bwi_regwin_switch(sc, bus, &old);
  947                 if (error)
  948                         return error;
  949 
  950                 CSR_SETBITS_4(sc, BWI_INTRVEC, (val & BWI_FLAGS_INTR_MASK));
  951         } else {
  952                 uint32_t mac_mask;
  953 
  954                 mac_mask = 1 << mac->mac_id;
  955 
  956                 error = bwi_regwin_switch(sc, bus, &old);
  957                 if (error)
  958                         return error;
  959 
  960                 val = pci_read_config(sc->sc_dev, BWI_PCIR_INTCTL, 4);
  961                 val |= mac_mask << 8;
  962                 pci_write_config(sc->sc_dev, BWI_PCIR_INTCTL, val, 4);
  963         }
  964 
  965         if (sc->sc_flags & BWI_F_BUS_INITED)
  966                 goto back;
  967 
  968         if (bus->rw_type == BWI_REGWIN_T_BUSPCI) {
  969                 /*
  970                  * Enable prefetch and burst
  971                  */
  972                 CSR_SETBITS_4(sc, BWI_BUS_CONFIG,
  973                               BWI_BUS_CONFIG_PREFETCH | BWI_BUS_CONFIG_BURST);
  974 
  975                 if (bus->rw_rev < 5) {
  976                         struct bwi_regwin *com = &sc->sc_com_regwin;
  977 
  978                         /*
  979                          * Configure timeouts for bus operation
  980                          */
  981 
  982                         /*
  983                          * Set service timeout and request timeout
  984                          */
  985                         CSR_SETBITS_4(sc, BWI_CONF_LO,
  986                         __SHIFTIN(BWI_CONF_LO_SERVTO, BWI_CONF_LO_SERVTO_MASK) |
  987                         __SHIFTIN(BWI_CONF_LO_REQTO, BWI_CONF_LO_REQTO_MASK));
  988 
  989                         /*
  990                          * If there is common regwin, we switch to that regwin
  991                          * and switch back to bus regwin once we have done.
  992                          */
  993                         if (BWI_REGWIN_EXIST(com)) {
  994                                 error = bwi_regwin_switch(sc, com, NULL);
  995                                 if (error)
  996                                         return error;
  997                         }
  998 
  999                         /* Let bus know what we have changed */
 1000                         CSR_WRITE_4(sc, BWI_BUS_ADDR, BWI_BUS_ADDR_MAGIC);
 1001                         CSR_READ_4(sc, BWI_BUS_ADDR); /* Flush */
 1002                         CSR_WRITE_4(sc, BWI_BUS_DATA, 0);
 1003                         CSR_READ_4(sc, BWI_BUS_DATA); /* Flush */
 1004 
 1005                         if (BWI_REGWIN_EXIST(com)) {
 1006                                 error = bwi_regwin_switch(sc, bus, NULL);
 1007                                 if (error)
 1008                                         return error;
 1009                         }
 1010                 } else if (bus->rw_rev >= 11) {
 1011                         /*
 1012                          * Enable memory read multiple
 1013                          */
 1014                         CSR_SETBITS_4(sc, BWI_BUS_CONFIG, BWI_BUS_CONFIG_MRM);
 1015                 }
 1016         } else {
 1017                 /* TODO:PCIE */
 1018         }
 1019 
 1020         sc->sc_flags |= BWI_F_BUS_INITED;
 1021 back:
 1022         return bwi_regwin_switch(sc, old, NULL);
 1023 }
 1024 
 1025 static void
 1026 bwi_get_card_flags(struct bwi_softc *sc)
 1027 {
 1028 #define PCI_VENDOR_APPLE 0x106b
 1029 #define PCI_VENDOR_DELL  0x1028
 1030         sc->sc_card_flags = bwi_read_sprom(sc, BWI_SPROM_CARD_FLAGS);
 1031         if (sc->sc_card_flags == 0xffff)
 1032                 sc->sc_card_flags = 0;
 1033 
 1034         if (sc->sc_pci_subvid == PCI_VENDOR_DELL &&
 1035             sc->sc_bbp_id == BWI_BBPID_BCM4301 &&
 1036             sc->sc_pci_revid == 0x74)
 1037                 sc->sc_card_flags |= BWI_CARD_F_BT_COEXIST;
 1038 
 1039         if (sc->sc_pci_subvid == PCI_VENDOR_APPLE &&
 1040             sc->sc_pci_subdid == 0x4e && /* XXX */
 1041             sc->sc_pci_revid > 0x40)
 1042                 sc->sc_card_flags |= BWI_CARD_F_PA_GPIO9;
 1043 
 1044         DPRINTF(sc, BWI_DBG_ATTACH, "card flags 0x%04x\n", sc->sc_card_flags);
 1045 #undef PCI_VENDOR_DELL
 1046 #undef PCI_VENDOR_APPLE
 1047 }
 1048 
 1049 static void
 1050 bwi_get_eaddr(struct bwi_softc *sc, uint16_t eaddr_ofs, uint8_t *eaddr)
 1051 {
 1052         int i;
 1053 
 1054         for (i = 0; i < 3; ++i) {
 1055                 *((uint16_t *)eaddr + i) =
 1056                         htobe16(bwi_read_sprom(sc, eaddr_ofs + 2 * i));
 1057         }
 1058 }
 1059 
 1060 static void
 1061 bwi_get_clock_freq(struct bwi_softc *sc, struct bwi_clock_freq *freq)
 1062 {
 1063         struct bwi_regwin *com;
 1064         uint32_t val;
 1065         u_int div;
 1066         int src;
 1067 
 1068         bzero(freq, sizeof(*freq));
 1069         com = &sc->sc_com_regwin;
 1070 
 1071         KASSERT(BWI_REGWIN_EXIST(com), ("regwin does not exist"));
 1072         KASSERT(sc->sc_cur_regwin == com, ("wrong regwin"));
 1073         KASSERT(sc->sc_cap & BWI_CAP_CLKMODE, ("wrong clock mode"));
 1074 
 1075         /*
 1076          * Calculate clock frequency
 1077          */
 1078         src = -1;
 1079         div = 0;
 1080         if (com->rw_rev < 6) {
 1081                 val = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 1082                 if (val & BWI_PCIM_GPIO_OUT_CLKSRC) {
 1083                         src = BWI_CLKSRC_PCI;
 1084                         div = 64;
 1085                 } else {
 1086                         src = BWI_CLKSRC_CS_OSC;
 1087                         div = 32;
 1088                 }
 1089         } else if (com->rw_rev < 10) {
 1090                 val = CSR_READ_4(sc, BWI_CLOCK_CTRL);
 1091 
 1092                 src = __SHIFTOUT(val, BWI_CLOCK_CTRL_CLKSRC);
 1093                 if (src == BWI_CLKSRC_LP_OSC) {
 1094                         div = 1;
 1095                 } else {
 1096                         div = (__SHIFTOUT(val, BWI_CLOCK_CTRL_FDIV) + 1) << 2;
 1097 
 1098                         /* Unknown source */
 1099                         if (src >= BWI_CLKSRC_MAX)
 1100                                 src = BWI_CLKSRC_CS_OSC;
 1101                 }
 1102         } else {
 1103                 val = CSR_READ_4(sc, BWI_CLOCK_INFO);
 1104 
 1105                 src = BWI_CLKSRC_CS_OSC;
 1106                 div = (__SHIFTOUT(val, BWI_CLOCK_INFO_FDIV) + 1) << 2;
 1107         }
 1108 
 1109         KASSERT(src >= 0 && src < BWI_CLKSRC_MAX, ("bad src %d", src));
 1110         KASSERT(div != 0, ("div zero"));
 1111 
 1112         DPRINTF(sc, BWI_DBG_ATTACH, "clksrc %s\n",
 1113                 src == BWI_CLKSRC_PCI ? "PCI" :
 1114                 (src == BWI_CLKSRC_LP_OSC ? "LP_OSC" : "CS_OSC"));
 1115 
 1116         freq->clkfreq_min = bwi_clkfreq[src].freq_min / div;
 1117         freq->clkfreq_max = bwi_clkfreq[src].freq_max / div;
 1118 
 1119         DPRINTF(sc, BWI_DBG_ATTACH, "clkfreq min %u, max %u\n",
 1120                 freq->clkfreq_min, freq->clkfreq_max);
 1121 }
 1122 
 1123 static int
 1124 bwi_set_clock_mode(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
 1125 {
 1126         struct bwi_regwin *old, *com;
 1127         uint32_t clk_ctrl, clk_src;
 1128         int error, pwr_off = 0;
 1129 
 1130         com = &sc->sc_com_regwin;
 1131         if (!BWI_REGWIN_EXIST(com))
 1132                 return 0;
 1133 
 1134         if (com->rw_rev >= 10 || com->rw_rev < 6)
 1135                 return 0;
 1136 
 1137         /*
 1138          * For common regwin whose rev is [6, 10), the chip
 1139          * must be capable to change clock mode.
 1140          */
 1141         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
 1142                 return 0;
 1143 
 1144         error = bwi_regwin_switch(sc, com, &old);
 1145         if (error)
 1146                 return error;
 1147 
 1148         if (clk_mode == BWI_CLOCK_MODE_FAST)
 1149                 bwi_power_on(sc, 0);    /* Don't turn on PLL */
 1150 
 1151         clk_ctrl = CSR_READ_4(sc, BWI_CLOCK_CTRL);
 1152         clk_src = __SHIFTOUT(clk_ctrl, BWI_CLOCK_CTRL_CLKSRC);
 1153 
 1154         switch (clk_mode) {
 1155         case BWI_CLOCK_MODE_FAST:
 1156                 clk_ctrl &= ~BWI_CLOCK_CTRL_SLOW;
 1157                 clk_ctrl |= BWI_CLOCK_CTRL_IGNPLL;
 1158                 break;
 1159         case BWI_CLOCK_MODE_SLOW:
 1160                 clk_ctrl |= BWI_CLOCK_CTRL_SLOW;
 1161                 break;
 1162         case BWI_CLOCK_MODE_DYN:
 1163                 clk_ctrl &= ~(BWI_CLOCK_CTRL_SLOW |
 1164                               BWI_CLOCK_CTRL_IGNPLL |
 1165                               BWI_CLOCK_CTRL_NODYN);
 1166                 if (clk_src != BWI_CLKSRC_CS_OSC) {
 1167                         clk_ctrl |= BWI_CLOCK_CTRL_NODYN;
 1168                         pwr_off = 1;
 1169                 }
 1170                 break;
 1171         }
 1172         CSR_WRITE_4(sc, BWI_CLOCK_CTRL, clk_ctrl);
 1173 
 1174         if (pwr_off)
 1175                 bwi_power_off(sc, 0);   /* Leave PLL as it is */
 1176 
 1177         return bwi_regwin_switch(sc, old, NULL);
 1178 }
 1179 
 1180 static int
 1181 bwi_set_clock_delay(struct bwi_softc *sc)
 1182 {
 1183         struct bwi_regwin *old, *com;
 1184         int error;
 1185 
 1186         com = &sc->sc_com_regwin;
 1187         if (!BWI_REGWIN_EXIST(com))
 1188                 return 0;
 1189 
 1190         error = bwi_regwin_switch(sc, com, &old);
 1191         if (error)
 1192                 return error;
 1193 
 1194         if (sc->sc_bbp_id == BWI_BBPID_BCM4321) {
 1195                 if (sc->sc_bbp_rev == 0)
 1196                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC0);
 1197                 else if (sc->sc_bbp_rev == 1)
 1198                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC1);
 1199         }
 1200 
 1201         if (sc->sc_cap & BWI_CAP_CLKMODE) {
 1202                 if (com->rw_rev >= 10) {
 1203                         CSR_FILT_SETBITS_4(sc, BWI_CLOCK_INFO, 0xffff, 0x40000);
 1204                 } else {
 1205                         struct bwi_clock_freq freq;
 1206 
 1207                         bwi_get_clock_freq(sc, &freq);
 1208                         CSR_WRITE_4(sc, BWI_PLL_ON_DELAY,
 1209                                 howmany(freq.clkfreq_max * 150, 1000000));
 1210                         CSR_WRITE_4(sc, BWI_FREQ_SEL_DELAY,
 1211                                 howmany(freq.clkfreq_max * 15, 1000000));
 1212                 }
 1213         }
 1214 
 1215         return bwi_regwin_switch(sc, old, NULL);
 1216 }
 1217 
 1218 static void
 1219 bwi_init(void *xsc)
 1220 {
 1221         struct bwi_softc *sc = xsc;
 1222         struct ifnet *ifp = sc->sc_ifp;
 1223         struct ieee80211com *ic = ifp->if_l2com;
 1224 
 1225         BWI_LOCK(sc);
 1226         bwi_init_statechg(sc, 1);
 1227         BWI_UNLOCK(sc);
 1228 
 1229         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 1230                 ieee80211_start_all(ic);                /* start all vap's */
 1231 }
 1232 
 1233 static void
 1234 bwi_init_statechg(struct bwi_softc *sc, int statechg)
 1235 {
 1236         struct ifnet *ifp = sc->sc_ifp;
 1237         struct bwi_mac *mac;
 1238         int error;
 1239 
 1240         bwi_stop_locked(sc, statechg);
 1241 
 1242         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
 1243 
 1244         /* TODO: 2 MAC */
 1245 
 1246         mac = &sc->sc_mac[0];
 1247         error = bwi_regwin_switch(sc, &mac->mac_regwin, NULL);
 1248         if (error) {
 1249                 if_printf(ifp, "%s: error %d on regwin switch\n",
 1250                     __func__, error);
 1251                 goto bad;
 1252         }
 1253         error = bwi_mac_init(mac);
 1254         if (error) {
 1255                 if_printf(ifp, "%s: error %d on MAC init\n", __func__, error);
 1256                 goto bad;
 1257         }
 1258 
 1259         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_DYN);
 1260 
 1261         bwi_set_bssid(sc, bwi_zero_addr);       /* Clear BSSID */
 1262         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_MYADDR, IF_LLADDR(ifp));
 1263 
 1264         bwi_mac_reset_hwkeys(mac);
 1265 
 1266         if ((mac->mac_flags & BWI_MAC_F_HAS_TXSTATS) == 0) {
 1267                 int i;
 1268 
 1269 #define NRETRY  1000
 1270                 /*
 1271                  * Drain any possible pending TX status
 1272                  */
 1273                 for (i = 0; i < NRETRY; ++i) {
 1274                         if ((CSR_READ_4(sc, BWI_TXSTATUS0) &
 1275                              BWI_TXSTATUS0_VALID) == 0)
 1276                                 break;
 1277                         CSR_READ_4(sc, BWI_TXSTATUS1);
 1278                 }
 1279                 if (i == NRETRY)
 1280                         if_printf(ifp, "%s: can't drain TX status\n", __func__);
 1281 #undef NRETRY
 1282         }
 1283 
 1284         if (mac->mac_phy.phy_mode == IEEE80211_MODE_11G)
 1285                 bwi_mac_updateslot(mac, 1);
 1286 
 1287         /* Start MAC */
 1288         error = bwi_mac_start(mac);
 1289         if (error) {
 1290                 if_printf(ifp, "%s: error %d starting MAC\n", __func__, error);
 1291                 goto bad;
 1292         }
 1293 
 1294         /* Clear stop flag before enabling interrupt */
 1295         sc->sc_flags &= ~BWI_F_STOP;
 1296 
 1297         ifp->if_drv_flags |= IFF_DRV_RUNNING;
 1298 
 1299         /* Enable intrs */
 1300         bwi_enable_intrs(sc, BWI_INIT_INTRS);
 1301         return;
 1302 bad:
 1303         bwi_stop_locked(sc, 1);
 1304 }
 1305 
 1306 static int
 1307 bwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 1308 {
 1309 #define IS_RUNNING(ifp) \
 1310         ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING))
 1311         struct bwi_softc *sc = ifp->if_softc;
 1312         struct ieee80211com *ic = ifp->if_l2com;
 1313         struct ifreq *ifr = (struct ifreq *) data;
 1314         int error = 0, startall = 0;
 1315 
 1316         switch (cmd) {
 1317         case SIOCSIFFLAGS:
 1318                 BWI_LOCK(sc);
 1319                 if (IS_RUNNING(ifp)) {
 1320                         struct bwi_mac *mac;
 1321                         int promisc = -1;
 1322 
 1323                         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 1324                             ("current regwin type %d",
 1325                             sc->sc_cur_regwin->rw_type));
 1326                         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 1327 
 1328                         if ((ifp->if_flags & IFF_PROMISC) &&
 1329                             (sc->sc_flags & BWI_F_PROMISC) == 0) {
 1330                                 promisc = 1;
 1331                                 sc->sc_flags |= BWI_F_PROMISC;
 1332                         } else if ((ifp->if_flags & IFF_PROMISC) == 0 &&
 1333                                    (sc->sc_flags & BWI_F_PROMISC)) {
 1334                                 promisc = 0;
 1335                                 sc->sc_flags &= ~BWI_F_PROMISC;
 1336                         }
 1337 
 1338                         if (promisc >= 0)
 1339                                 bwi_mac_set_promisc(mac, promisc);
 1340                 }
 1341 
 1342                 if (ifp->if_flags & IFF_UP) {
 1343                         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
 1344                                 bwi_init_statechg(sc, 1);
 1345                                 startall = 1;
 1346                         }
 1347                 } else {
 1348                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 1349                                 bwi_stop_locked(sc, 1);
 1350                 }
 1351                 BWI_UNLOCK(sc);
 1352                 if (startall)
 1353                         ieee80211_start_all(ic);
 1354                 break;
 1355         case SIOCGIFMEDIA:
 1356                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
 1357                 break;
 1358         case SIOCGIFADDR:
 1359                 error = ether_ioctl(ifp, cmd, data);
 1360                 break;
 1361         default:
 1362                 error = EINVAL;
 1363                 break;
 1364         }
 1365         return error;
 1366 #undef IS_RUNNING
 1367 }
 1368 
 1369 static void
 1370 bwi_start(struct ifnet *ifp)
 1371 {
 1372         struct bwi_softc *sc = ifp->if_softc;
 1373 
 1374         BWI_LOCK(sc);
 1375         bwi_start_locked(ifp);
 1376         BWI_UNLOCK(sc);
 1377 }
 1378 
 1379 static void
 1380 bwi_start_locked(struct ifnet *ifp)
 1381 {
 1382         struct bwi_softc *sc = ifp->if_softc;
 1383         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
 1384         struct ieee80211_frame *wh;
 1385         struct ieee80211_node *ni;
 1386         struct ieee80211_key *k;
 1387         struct mbuf *m;
 1388         int trans, idx;
 1389 
 1390         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
 1391                 return;
 1392 
 1393         trans = 0;
 1394         idx = tbd->tbd_idx;
 1395 
 1396         while (tbd->tbd_buf[idx].tb_mbuf == NULL) {
 1397                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);       /* XXX: LOCK */
 1398                 if (m == NULL)
 1399                         break;
 1400 
 1401                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
 1402                 wh = mtod(m, struct ieee80211_frame *);
 1403                 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
 1404                         k = ieee80211_crypto_encap(ni, m);
 1405                         if (k == NULL) {
 1406                                 ieee80211_free_node(ni);
 1407                                 m_freem(m);
 1408                                 ifp->if_oerrors++;
 1409                                 continue;
 1410                         }
 1411                 }
 1412                 wh = NULL;      /* Catch any invalid use */
 1413 
 1414                 if (bwi_encap(sc, idx, m, ni) != 0) {
 1415                         /* 'm' is freed in bwi_encap() if we reach here */
 1416                         if (ni != NULL)
 1417                                 ieee80211_free_node(ni);
 1418                         ifp->if_oerrors++;
 1419                         continue;
 1420                 }
 1421 
 1422                 trans = 1;
 1423                 tbd->tbd_used++;
 1424                 idx = (idx + 1) % BWI_TX_NDESC;
 1425 
 1426                 ifp->if_opackets++;
 1427 
 1428                 if (tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC) {
 1429                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
 1430                         break;
 1431                 }
 1432         }
 1433         tbd->tbd_idx = idx;
 1434 
 1435         if (trans)
 1436                 ifp->if_timer = 5;
 1437 }
 1438 
 1439 static int
 1440 bwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
 1441         const struct ieee80211_bpf_params *params)
 1442 {
 1443         struct ieee80211com *ic = ni->ni_ic;
 1444         struct ifnet *ifp = ic->ic_ifp;
 1445         struct bwi_softc *sc = ifp->if_softc;
 1446         /* XXX wme? */
 1447         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
 1448         int idx, error;
 1449 
 1450         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
 1451                 ieee80211_free_node(ni);
 1452                 m_freem(m);
 1453                 return ENETDOWN;
 1454         }
 1455 
 1456         BWI_LOCK(sc);
 1457         idx = tbd->tbd_idx;
 1458         KASSERT(tbd->tbd_buf[idx].tb_mbuf == NULL, ("slot %d not empty", idx));
 1459         if (params == NULL) {
 1460                 /*
 1461                  * Legacy path; interpret frame contents to decide
 1462                  * precisely how to send the frame.
 1463                  */
 1464                 error = bwi_encap(sc, idx, m, ni);
 1465         } else {
 1466                 /*
 1467                  * Caller supplied explicit parameters to use in
 1468                  * sending the frame.
 1469                  */
 1470                 error = bwi_encap_raw(sc, idx, m, ni, params);
 1471         }
 1472         if (error == 0) {
 1473                 ifp->if_opackets++;
 1474                 if (++tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC)
 1475                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
 1476                 tbd->tbd_idx = (idx + 1) % BWI_TX_NDESC;
 1477                 ifp->if_timer = 5;
 1478         } else {
 1479                 /* NB: m is reclaimed on encap failure */
 1480                 ieee80211_free_node(ni);
 1481                 ifp->if_oerrors++;
 1482         }
 1483         BWI_UNLOCK(sc);
 1484         return error;
 1485 }
 1486 
 1487 static void
 1488 bwi_watchdog(struct ifnet *ifp)
 1489 {
 1490         struct bwi_softc *sc = ifp->if_softc;
 1491 
 1492         BWI_LOCK(sc);
 1493         if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 1494                 if_printf(ifp, "watchdog timeout\n");
 1495                 ifp->if_oerrors++;
 1496                 taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
 1497         }
 1498         BWI_UNLOCK(sc);
 1499 }
 1500 
 1501 static void
 1502 bwi_stop(struct bwi_softc *sc, int statechg)
 1503 {
 1504         BWI_LOCK(sc);
 1505         bwi_stop_locked(sc, statechg);
 1506         BWI_UNLOCK(sc);
 1507 }
 1508 
 1509 static void
 1510 bwi_stop_locked(struct bwi_softc *sc, int statechg)
 1511 {
 1512         struct ifnet *ifp = sc->sc_ifp;
 1513         struct bwi_mac *mac;
 1514         int i, error, pwr_off = 0;
 1515 
 1516         BWI_ASSERT_LOCKED(sc);
 1517 
 1518         callout_stop(&sc->sc_calib_ch);
 1519         callout_stop(&sc->sc_led_blink_ch);
 1520         sc->sc_led_blinking = 0;
 1521         sc->sc_flags |= BWI_F_STOP;
 1522 
 1523         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 1524                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 1525                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 1526                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
 1527 
 1528                 bwi_disable_intrs(sc, BWI_ALL_INTRS);
 1529                 CSR_READ_4(sc, BWI_MAC_INTR_MASK);
 1530                 bwi_mac_stop(mac);
 1531         }
 1532 
 1533         for (i = 0; i < sc->sc_nmac; ++i) {
 1534                 struct bwi_regwin *old_rw;
 1535 
 1536                 mac = &sc->sc_mac[i];
 1537                 if ((mac->mac_flags & BWI_MAC_F_INITED) == 0)
 1538                         continue;
 1539 
 1540                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old_rw);
 1541                 if (error)
 1542                         continue;
 1543 
 1544                 bwi_mac_shutdown(mac);
 1545                 pwr_off = 1;
 1546 
 1547                 bwi_regwin_switch(sc, old_rw, NULL);
 1548         }
 1549 
 1550         if (pwr_off)
 1551                 bwi_bbp_power_off(sc);
 1552 
 1553         sc->sc_tx_timer = 0;
 1554         ifp->if_timer = 0;
 1555         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
 1556 }
 1557 
 1558 void
 1559 bwi_intr(void *xsc)
 1560 {
 1561         struct bwi_softc *sc = xsc;
 1562         struct ifnet *ifp = sc->sc_ifp;
 1563         struct bwi_mac *mac;
 1564         uint32_t intr_status;
 1565         uint32_t txrx_intr_status[BWI_TXRX_NRING];
 1566         int i, txrx_error, tx = 0, rx_data = -1;
 1567 
 1568         BWI_LOCK(sc);
 1569 
 1570         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
 1571             (sc->sc_flags & BWI_F_STOP)) {
 1572                 BWI_UNLOCK(sc);
 1573                 return;
 1574         }
 1575         /*
 1576          * Get interrupt status
 1577          */
 1578         intr_status = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
 1579         if (intr_status == 0xffffffff) {        /* Not for us */
 1580                 BWI_UNLOCK(sc);
 1581                 return;
 1582         }
 1583 
 1584         DPRINTF(sc, BWI_DBG_INTR, "intr status 0x%08x\n", intr_status);
 1585 
 1586         intr_status &= CSR_READ_4(sc, BWI_MAC_INTR_MASK);
 1587         if (intr_status == 0) {         /* Nothing is interesting */
 1588                 BWI_UNLOCK(sc);
 1589                 return;
 1590         }
 1591 
 1592         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 1593             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 1594         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 1595 
 1596         txrx_error = 0;
 1597         DPRINTF(sc, BWI_DBG_INTR, "%s\n", "TX/RX intr");
 1598         for (i = 0; i < BWI_TXRX_NRING; ++i) {
 1599                 uint32_t mask;
 1600 
 1601                 if (BWI_TXRX_IS_RX(i))
 1602                         mask = BWI_TXRX_RX_INTRS;
 1603                 else
 1604                         mask = BWI_TXRX_TX_INTRS;
 1605 
 1606                 txrx_intr_status[i] =
 1607                 CSR_READ_4(sc, BWI_TXRX_INTR_STATUS(i)) & mask;
 1608 
 1609                 _DPRINTF(sc, BWI_DBG_INTR, ", %d 0x%08x",
 1610                          i, txrx_intr_status[i]);
 1611 
 1612                 if (txrx_intr_status[i] & BWI_TXRX_INTR_ERROR) {
 1613                         if_printf(ifp,
 1614                             "%s: intr fatal TX/RX (%d) error 0x%08x\n",
 1615                             __func__, i, txrx_intr_status[i]);
 1616                         txrx_error = 1;
 1617                 }
 1618         }
 1619         _DPRINTF(sc, BWI_DBG_INTR, "%s\n", "");
 1620 
 1621         /*
 1622          * Acknowledge interrupt
 1623          */
 1624         CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, intr_status);
 1625 
 1626         for (i = 0; i < BWI_TXRX_NRING; ++i)
 1627                 CSR_WRITE_4(sc, BWI_TXRX_INTR_STATUS(i), txrx_intr_status[i]);
 1628 
 1629         /* Disable all interrupts */
 1630         bwi_disable_intrs(sc, BWI_ALL_INTRS);
 1631 
 1632         /*
 1633          * http://bcm-specs.sipsolutions.net/Interrupts
 1634          * Says for this bit (0x800):
 1635          * "Fatal Error
 1636          *
 1637          * We got this one while testing things when by accident the
 1638          * template ram wasn't set to big endian when it should have
 1639          * been after writing the initial values. It keeps on being
 1640          * triggered, the only way to stop it seems to shut down the
 1641          * chip."
 1642          *
 1643          * Suggesting that we should never get it and if we do we're not
 1644          * feeding TX packets into the MAC correctly if we do...  Apparently,
 1645          * it is valid only on mac version 5 and higher, but I couldn't
 1646          * find a reference for that...  Since I see them from time to time
 1647          * on my card, this suggests an error in the tx path still...
 1648          */
 1649         if (intr_status & BWI_INTR_PHY_TXERR) {
 1650                 if (mac->mac_flags & BWI_MAC_F_PHYE_RESET) {
 1651                         if_printf(ifp, "%s: intr PHY TX error\n", __func__);
 1652                         taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
 1653                         BWI_UNLOCK(sc);
 1654                         return;
 1655                 }
 1656         }
 1657 
 1658         if (txrx_error) {
 1659                 /* TODO: reset device */
 1660         }
 1661 
 1662         if (intr_status & BWI_INTR_TBTT)
 1663                 bwi_mac_config_ps(mac);
 1664 
 1665         if (intr_status & BWI_INTR_EO_ATIM)
 1666                 if_printf(ifp, "EO_ATIM\n");
 1667 
 1668         if (intr_status & BWI_INTR_PMQ) {
 1669                 for (;;) {
 1670                         if ((CSR_READ_4(sc, BWI_MAC_PS_STATUS) & 0x8) == 0)
 1671                                 break;
 1672                 }
 1673                 CSR_WRITE_2(sc, BWI_MAC_PS_STATUS, 0x2);
 1674         }
 1675 
 1676         if (intr_status & BWI_INTR_NOISE)
 1677                 if_printf(ifp, "intr noise\n");
 1678 
 1679         if (txrx_intr_status[0] & BWI_TXRX_INTR_RX) {
 1680                 rx_data = sc->sc_rxeof(sc);
 1681                 if (sc->sc_flags & BWI_F_STOP) {
 1682                         BWI_UNLOCK(sc);
 1683                         return;
 1684                 }
 1685         }
 1686 
 1687         if (txrx_intr_status[3] & BWI_TXRX_INTR_RX) {
 1688                 sc->sc_txeof_status(sc);
 1689                 tx = 1;
 1690         }
 1691 
 1692         if (intr_status & BWI_INTR_TX_DONE) {
 1693                 bwi_txeof(sc);
 1694                 tx = 1;
 1695         }
 1696 
 1697         /* Re-enable interrupts */
 1698         bwi_enable_intrs(sc, BWI_INIT_INTRS);
 1699 
 1700         if (sc->sc_blink_led != NULL && sc->sc_led_blink) {
 1701                 int evt = BWI_LED_EVENT_NONE;
 1702 
 1703                 if (tx && rx_data > 0) {
 1704                         if (sc->sc_rx_rate > sc->sc_tx_rate)
 1705                                 evt = BWI_LED_EVENT_RX;
 1706                         else
 1707                                 evt = BWI_LED_EVENT_TX;
 1708                 } else if (tx) {
 1709                         evt = BWI_LED_EVENT_TX;
 1710                 } else if (rx_data > 0) {
 1711                         evt = BWI_LED_EVENT_RX;
 1712                 } else if (rx_data == 0) {
 1713                         evt = BWI_LED_EVENT_POLL;
 1714                 }
 1715 
 1716                 if (evt != BWI_LED_EVENT_NONE)
 1717                         bwi_led_event(sc, evt);
 1718         }
 1719 
 1720         BWI_UNLOCK(sc);
 1721 }
 1722 
 1723 static void
 1724 bwi_scan_start(struct ieee80211com *ic)
 1725 {
 1726         struct bwi_softc *sc = ic->ic_ifp->if_softc;
 1727 
 1728         BWI_LOCK(sc);
 1729         /* Enable MAC beacon promiscuity */
 1730         CSR_SETBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
 1731         BWI_UNLOCK(sc);
 1732 }
 1733 
 1734 static void
 1735 bwi_set_channel(struct ieee80211com *ic)
 1736 {
 1737         struct bwi_softc *sc = ic->ic_ifp->if_softc;
 1738         struct ieee80211_channel *c = ic->ic_curchan;
 1739         struct bwi_mac *mac;
 1740 
 1741         BWI_LOCK(sc);
 1742         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 1743             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 1744         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 1745         bwi_rf_set_chan(mac, ieee80211_chan2ieee(ic, c), 0);
 1746 
 1747         sc->sc_rates = ieee80211_get_ratetable(c);
 1748 
 1749         /*
 1750          * Setup radio tap channel freq and flags
 1751          */
 1752         sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
 1753                 htole16(c->ic_freq);
 1754         sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
 1755                 htole16(c->ic_flags & 0xffff);
 1756 
 1757         BWI_UNLOCK(sc);
 1758 }
 1759 
 1760 static void
 1761 bwi_scan_end(struct ieee80211com *ic)
 1762 {
 1763         struct bwi_softc *sc = ic->ic_ifp->if_softc;
 1764 
 1765         BWI_LOCK(sc);
 1766         CSR_CLRBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
 1767         BWI_UNLOCK(sc);
 1768 }
 1769 
 1770 static int
 1771 bwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 1772 {
 1773         struct bwi_vap *bvp = BWI_VAP(vap);
 1774         struct ieee80211com *ic= vap->iv_ic;
 1775         struct ifnet *ifp = ic->ic_ifp;
 1776         enum ieee80211_state ostate = vap->iv_state;
 1777         struct bwi_softc *sc = ifp->if_softc;
 1778         struct bwi_mac *mac;
 1779         struct ieee80211_node *ni = vap->iv_bss;
 1780         int error;
 1781 
 1782         BWI_LOCK(sc);
 1783 
 1784         callout_stop(&sc->sc_calib_ch);
 1785 
 1786         if (nstate == IEEE80211_S_INIT)
 1787                 sc->sc_txpwrcb_type = BWI_TXPWR_INIT;
 1788 
 1789         bwi_led_newstate(sc, nstate);
 1790 
 1791         error = bvp->bv_newstate(vap, nstate, arg);
 1792         if (error != 0)
 1793                 goto back;
 1794 
 1795         /*
 1796          * Clear the BSSID when we stop a STA
 1797          */
 1798         if (vap->iv_opmode == IEEE80211_M_STA) {
 1799                 if (ostate == IEEE80211_S_RUN && nstate != IEEE80211_S_RUN) {
 1800                         /*
 1801                          * Clear out the BSSID.  If we reassociate to
 1802                          * the same AP, this will reinialize things
 1803                          * correctly...
 1804                          */
 1805                         if (ic->ic_opmode == IEEE80211_M_STA && 
 1806                             !(sc->sc_flags & BWI_F_STOP))
 1807                                 bwi_set_bssid(sc, bwi_zero_addr);
 1808                 }
 1809         }
 1810 
 1811         if (vap->iv_opmode == IEEE80211_M_MONITOR) {
 1812                 /* Nothing to do */
 1813         } else if (nstate == IEEE80211_S_RUN) {
 1814                 bwi_set_bssid(sc, vap->iv_bss->ni_bssid);
 1815 
 1816                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 1817                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 1818                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
 1819 
 1820                 /* Initial TX power calibration */
 1821                 bwi_mac_calibrate_txpower(mac, BWI_TXPWR_INIT);
 1822 #ifdef notyet
 1823                 sc->sc_txpwrcb_type = BWI_TXPWR_FORCE;
 1824 #else
 1825                 sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
 1826 #endif
 1827                 if (vap->iv_opmode == IEEE80211_M_STA) {
 1828                         /* fake a join to init the tx rate */
 1829                         bwi_newassoc(ni, 1);
 1830                 }
 1831 
 1832                 callout_reset(&sc->sc_calib_ch, hz, bwi_calibrate, sc);
 1833         }
 1834 back:
 1835         BWI_UNLOCK(sc);
 1836 
 1837         return error;
 1838 }
 1839 
 1840 /* ARGUSED */
 1841 static struct ieee80211_node *
 1842 bwi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
 1843 {
 1844         struct bwi_node *bn;
 1845 
 1846         bn = malloc(sizeof(struct bwi_node), M_80211_NODE, M_NOWAIT | M_ZERO);
 1847         return bn != NULL ? &bn->ni : NULL;
 1848 }
 1849 
 1850 static void
 1851 bwi_newassoc(struct ieee80211_node *ni, int isnew)
 1852 {
 1853         struct ieee80211vap *vap = ni->ni_vap;
 1854 
 1855         ieee80211_amrr_node_init(&BWI_VAP(vap)->bv_amrr,
 1856             &BWI_NODE(ni)->amn, ni);
 1857 }
 1858 
 1859 static int
 1860 bwi_media_change(struct ifnet *ifp)
 1861 {
 1862         int error = ieee80211_media_change(ifp);
 1863         /* NB: only the fixed rate can change and that doesn't need a reset */
 1864         return (error == ENETRESET ? 0 : error);
 1865 }
 1866 
 1867 static int
 1868 bwi_dma_alloc(struct bwi_softc *sc)
 1869 {
 1870         int error, i, has_txstats;
 1871         bus_addr_t lowaddr = 0;
 1872         bus_size_t tx_ring_sz, rx_ring_sz, desc_sz = 0;
 1873         uint32_t txrx_ctrl_step = 0;
 1874 
 1875         has_txstats = 0;
 1876         for (i = 0; i < sc->sc_nmac; ++i) {
 1877                 if (sc->sc_mac[i].mac_flags & BWI_MAC_F_HAS_TXSTATS) {
 1878                         has_txstats = 1;
 1879                         break;
 1880                 }
 1881         }
 1882 
 1883         switch (sc->sc_bus_space) {
 1884         case BWI_BUS_SPACE_30BIT:
 1885         case BWI_BUS_SPACE_32BIT:
 1886                 if (sc->sc_bus_space == BWI_BUS_SPACE_30BIT)
 1887                         lowaddr = BWI_BUS_SPACE_MAXADDR;
 1888                 else
 1889                         lowaddr = BUS_SPACE_MAXADDR_32BIT;
 1890                 desc_sz = sizeof(struct bwi_desc32);
 1891                 txrx_ctrl_step = 0x20;
 1892 
 1893                 sc->sc_init_tx_ring = bwi_init_tx_ring32;
 1894                 sc->sc_free_tx_ring = bwi_free_tx_ring32;
 1895                 sc->sc_init_rx_ring = bwi_init_rx_ring32;
 1896                 sc->sc_free_rx_ring = bwi_free_rx_ring32;
 1897                 sc->sc_setup_rxdesc = bwi_setup_rx_desc32;
 1898                 sc->sc_setup_txdesc = bwi_setup_tx_desc32;
 1899                 sc->sc_rxeof = bwi_rxeof32;
 1900                 sc->sc_start_tx = bwi_start_tx32;
 1901                 if (has_txstats) {
 1902                         sc->sc_init_txstats = bwi_init_txstats32;
 1903                         sc->sc_free_txstats = bwi_free_txstats32;
 1904                         sc->sc_txeof_status = bwi_txeof_status32;
 1905                 }
 1906                 break;
 1907 
 1908         case BWI_BUS_SPACE_64BIT:
 1909                 lowaddr = BUS_SPACE_MAXADDR;    /* XXX */
 1910                 desc_sz = sizeof(struct bwi_desc64);
 1911                 txrx_ctrl_step = 0x40;
 1912 
 1913                 sc->sc_init_tx_ring = bwi_init_tx_ring64;
 1914                 sc->sc_free_tx_ring = bwi_free_tx_ring64;
 1915                 sc->sc_init_rx_ring = bwi_init_rx_ring64;
 1916                 sc->sc_free_rx_ring = bwi_free_rx_ring64;
 1917                 sc->sc_setup_rxdesc = bwi_setup_rx_desc64;
 1918                 sc->sc_setup_txdesc = bwi_setup_tx_desc64;
 1919                 sc->sc_rxeof = bwi_rxeof64;
 1920                 sc->sc_start_tx = bwi_start_tx64;
 1921                 if (has_txstats) {
 1922                         sc->sc_init_txstats = bwi_init_txstats64;
 1923                         sc->sc_free_txstats = bwi_free_txstats64;
 1924                         sc->sc_txeof_status = bwi_txeof_status64;
 1925                 }
 1926                 break;
 1927         }
 1928 
 1929         KASSERT(lowaddr != 0, ("lowaddr zero"));
 1930         KASSERT(desc_sz != 0, ("desc_sz zero"));
 1931         KASSERT(txrx_ctrl_step != 0, ("txrx_ctrl_step zero"));
 1932 
 1933         tx_ring_sz = roundup(desc_sz * BWI_TX_NDESC, BWI_RING_ALIGN);
 1934         rx_ring_sz = roundup(desc_sz * BWI_RX_NDESC, BWI_RING_ALIGN);
 1935 
 1936         /*
 1937          * Create top level DMA tag
 1938          */
 1939         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), /* parent */
 1940                                BWI_ALIGN, 0,            /* alignment, bounds */
 1941                                lowaddr,                 /* lowaddr */
 1942                                BUS_SPACE_MAXADDR,       /* highaddr */
 1943                                NULL, NULL,              /* filter, filterarg */
 1944                                MAXBSIZE,                /* maxsize */
 1945                                BUS_SPACE_UNRESTRICTED,  /* nsegments */
 1946                                BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
 1947                                BUS_DMA_ALLOCNOW,        /* flags */
 1948                                NULL, NULL,              /* lockfunc, lockarg */
 1949                                &sc->sc_parent_dtag);
 1950         if (error) {
 1951                 device_printf(sc->sc_dev, "can't create parent DMA tag\n");
 1952                 return error;
 1953         }
 1954 
 1955 #define TXRX_CTRL(idx)  (BWI_TXRX_CTRL_BASE + (idx) * txrx_ctrl_step)
 1956 
 1957         /*
 1958          * Create TX ring DMA stuffs
 1959          */
 1960         error = bus_dma_tag_create(sc->sc_parent_dtag,
 1961                                 BWI_RING_ALIGN, 0,
 1962                                 BUS_SPACE_MAXADDR,
 1963                                 BUS_SPACE_MAXADDR,
 1964                                 NULL, NULL,
 1965                                 tx_ring_sz,
 1966                                 1,
 1967                                 BUS_SPACE_MAXSIZE_32BIT,
 1968                                 BUS_DMA_ALLOCNOW,
 1969                                 NULL, NULL,
 1970                                 &sc->sc_txring_dtag);
 1971         if (error) {
 1972                 device_printf(sc->sc_dev, "can't create TX ring DMA tag\n");
 1973                 return error;
 1974         }
 1975 
 1976         for (i = 0; i < BWI_TX_NRING; ++i) {
 1977                 error = bwi_dma_ring_alloc(sc, sc->sc_txring_dtag,
 1978                                            &sc->sc_tx_rdata[i], tx_ring_sz,
 1979                                            TXRX_CTRL(i));
 1980                 if (error) {
 1981                         device_printf(sc->sc_dev, "%dth TX ring "
 1982                                       "DMA alloc failed\n", i);
 1983                         return error;
 1984                 }
 1985         }
 1986 
 1987         /*
 1988          * Create RX ring DMA stuffs
 1989          */
 1990         error = bus_dma_tag_create(sc->sc_parent_dtag,
 1991                                 BWI_RING_ALIGN, 0,
 1992                                 BUS_SPACE_MAXADDR,
 1993                                 BUS_SPACE_MAXADDR,
 1994                                 NULL, NULL,
 1995                                 rx_ring_sz,
 1996                                 1,
 1997                                 BUS_SPACE_MAXSIZE_32BIT,
 1998                                 BUS_DMA_ALLOCNOW,
 1999                                 NULL, NULL,
 2000                                 &sc->sc_rxring_dtag);
 2001         if (error) {
 2002                 device_printf(sc->sc_dev, "can't create RX ring DMA tag\n");
 2003                 return error;
 2004         }
 2005 
 2006         error = bwi_dma_ring_alloc(sc, sc->sc_rxring_dtag, &sc->sc_rx_rdata,
 2007                                    rx_ring_sz, TXRX_CTRL(0));
 2008         if (error) {
 2009                 device_printf(sc->sc_dev, "RX ring DMA alloc failed\n");
 2010                 return error;
 2011         }
 2012 
 2013         if (has_txstats) {
 2014                 error = bwi_dma_txstats_alloc(sc, TXRX_CTRL(3), desc_sz);
 2015                 if (error) {
 2016                         device_printf(sc->sc_dev,
 2017                                       "TX stats DMA alloc failed\n");
 2018                         return error;
 2019                 }
 2020         }
 2021 
 2022 #undef TXRX_CTRL
 2023 
 2024         return bwi_dma_mbuf_create(sc);
 2025 }
 2026 
 2027 static void
 2028 bwi_dma_free(struct bwi_softc *sc)
 2029 {
 2030         if (sc->sc_txring_dtag != NULL) {
 2031                 int i;
 2032 
 2033                 for (i = 0; i < BWI_TX_NRING; ++i) {
 2034                         struct bwi_ring_data *rd = &sc->sc_tx_rdata[i];
 2035 
 2036                         if (rd->rdata_desc != NULL) {
 2037                                 bus_dmamap_unload(sc->sc_txring_dtag,
 2038                                                   rd->rdata_dmap);
 2039                                 bus_dmamem_free(sc->sc_txring_dtag,
 2040                                                 rd->rdata_desc,
 2041                                                 rd->rdata_dmap);
 2042                         }
 2043                 }
 2044                 bus_dma_tag_destroy(sc->sc_txring_dtag);
 2045         }
 2046 
 2047         if (sc->sc_rxring_dtag != NULL) {
 2048                 struct bwi_ring_data *rd = &sc->sc_rx_rdata;
 2049 
 2050                 if (rd->rdata_desc != NULL) {
 2051                         bus_dmamap_unload(sc->sc_rxring_dtag, rd->rdata_dmap);
 2052                         bus_dmamem_free(sc->sc_rxring_dtag, rd->rdata_desc,
 2053                                         rd->rdata_dmap);
 2054                 }
 2055                 bus_dma_tag_destroy(sc->sc_rxring_dtag);
 2056         }
 2057 
 2058         bwi_dma_txstats_free(sc);
 2059         bwi_dma_mbuf_destroy(sc, BWI_TX_NRING, 1);
 2060 
 2061         if (sc->sc_parent_dtag != NULL)
 2062                 bus_dma_tag_destroy(sc->sc_parent_dtag);
 2063 }
 2064 
 2065 static int
 2066 bwi_dma_ring_alloc(struct bwi_softc *sc, bus_dma_tag_t dtag,
 2067                    struct bwi_ring_data *rd, bus_size_t size,
 2068                    uint32_t txrx_ctrl)
 2069 {
 2070         int error;
 2071 
 2072         error = bus_dmamem_alloc(dtag, &rd->rdata_desc,
 2073                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
 2074                                  &rd->rdata_dmap);
 2075         if (error) {
 2076                 device_printf(sc->sc_dev, "can't allocate DMA mem\n");
 2077                 return error;
 2078         }
 2079 
 2080         error = bus_dmamap_load(dtag, rd->rdata_dmap, rd->rdata_desc, size,
 2081                                 bwi_dma_ring_addr, &rd->rdata_paddr,
 2082                                 BUS_DMA_NOWAIT);
 2083         if (error) {
 2084                 device_printf(sc->sc_dev, "can't load DMA mem\n");
 2085                 bus_dmamem_free(dtag, rd->rdata_desc, rd->rdata_dmap);
 2086                 rd->rdata_desc = NULL;
 2087                 return error;
 2088         }
 2089 
 2090         rd->rdata_txrx_ctrl = txrx_ctrl;
 2091         return 0;
 2092 }
 2093 
 2094 static int
 2095 bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
 2096                       bus_size_t desc_sz)
 2097 {
 2098         struct bwi_txstats_data *st;
 2099         bus_size_t dma_size;
 2100         int error;
 2101 
 2102         st = malloc(sizeof(*st), M_DEVBUF, M_NOWAIT | M_ZERO);
 2103         if (st == NULL) {
 2104                 device_printf(sc->sc_dev, "can't allocate txstats data\n");
 2105                 return ENOMEM;
 2106         }
 2107         sc->sc_txstats = st;
 2108 
 2109         /*
 2110          * Create TX stats descriptor DMA stuffs
 2111          */
 2112         dma_size = roundup(desc_sz * BWI_TXSTATS_NDESC, BWI_RING_ALIGN);
 2113 
 2114         error = bus_dma_tag_create(sc->sc_parent_dtag,
 2115                                 BWI_RING_ALIGN,
 2116                                 0,
 2117                                 BUS_SPACE_MAXADDR,
 2118                                 BUS_SPACE_MAXADDR,
 2119                                 NULL, NULL,
 2120                                 dma_size,
 2121                                 1,
 2122                                 BUS_SPACE_MAXSIZE_32BIT,
 2123                                 BUS_DMA_ALLOCNOW,
 2124                                 NULL, NULL,
 2125                                 &st->stats_ring_dtag);
 2126         if (error) {
 2127                 device_printf(sc->sc_dev, "can't create txstats ring "
 2128                               "DMA tag\n");
 2129                 return error;
 2130         }
 2131 
 2132         error = bus_dmamem_alloc(st->stats_ring_dtag, &st->stats_ring,
 2133                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
 2134                                  &st->stats_ring_dmap);
 2135         if (error) {
 2136                 device_printf(sc->sc_dev, "can't allocate txstats ring "
 2137                               "DMA mem\n");
 2138                 bus_dma_tag_destroy(st->stats_ring_dtag);
 2139                 st->stats_ring_dtag = NULL;
 2140                 return error;
 2141         }
 2142 
 2143         error = bus_dmamap_load(st->stats_ring_dtag, st->stats_ring_dmap,
 2144                                 st->stats_ring, dma_size,
 2145                                 bwi_dma_ring_addr, &st->stats_ring_paddr,
 2146                                 BUS_DMA_NOWAIT);
 2147         if (error) {
 2148                 device_printf(sc->sc_dev, "can't load txstats ring DMA mem\n");
 2149                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
 2150                                 st->stats_ring_dmap);
 2151                 bus_dma_tag_destroy(st->stats_ring_dtag);
 2152                 st->stats_ring_dtag = NULL;
 2153                 return error;
 2154         }
 2155 
 2156         /*
 2157          * Create TX stats DMA stuffs
 2158          */
 2159         dma_size = roundup(sizeof(struct bwi_txstats) * BWI_TXSTATS_NDESC,
 2160                            BWI_ALIGN);
 2161 
 2162         error = bus_dma_tag_create(sc->sc_parent_dtag,
 2163                                 BWI_ALIGN,
 2164                                 0,
 2165                                 BUS_SPACE_MAXADDR,
 2166                                 BUS_SPACE_MAXADDR,
 2167                                 NULL, NULL,
 2168                                 dma_size,
 2169                                 1,
 2170                                 BUS_SPACE_MAXSIZE_32BIT,
 2171                                 BUS_DMA_ALLOCNOW,
 2172                                 NULL, NULL,
 2173                                 &st->stats_dtag);
 2174         if (error) {
 2175                 device_printf(sc->sc_dev, "can't create txstats DMA tag\n");
 2176                 return error;
 2177         }
 2178 
 2179         error = bus_dmamem_alloc(st->stats_dtag, (void **)&st->stats,
 2180                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
 2181                                  &st->stats_dmap);
 2182         if (error) {
 2183                 device_printf(sc->sc_dev, "can't allocate txstats DMA mem\n");
 2184                 bus_dma_tag_destroy(st->stats_dtag);
 2185                 st->stats_dtag = NULL;
 2186                 return error;
 2187         }
 2188 
 2189         error = bus_dmamap_load(st->stats_dtag, st->stats_dmap, st->stats,
 2190                                 dma_size, bwi_dma_ring_addr, &st->stats_paddr,
 2191                                 BUS_DMA_NOWAIT);
 2192         if (error) {
 2193                 device_printf(sc->sc_dev, "can't load txstats DMA mem\n");
 2194                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
 2195                 bus_dma_tag_destroy(st->stats_dtag);
 2196                 st->stats_dtag = NULL;
 2197                 return error;
 2198         }
 2199 
 2200         st->stats_ctrl_base = ctrl_base;
 2201         return 0;
 2202 }
 2203 
 2204 static void
 2205 bwi_dma_txstats_free(struct bwi_softc *sc)
 2206 {
 2207         struct bwi_txstats_data *st;
 2208 
 2209         if (sc->sc_txstats == NULL)
 2210                 return;
 2211         st = sc->sc_txstats;
 2212 
 2213         if (st->stats_ring_dtag != NULL) {
 2214                 bus_dmamap_unload(st->stats_ring_dtag, st->stats_ring_dmap);
 2215                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
 2216                                 st->stats_ring_dmap);
 2217                 bus_dma_tag_destroy(st->stats_ring_dtag);
 2218         }
 2219 
 2220         if (st->stats_dtag != NULL) {
 2221                 bus_dmamap_unload(st->stats_dtag, st->stats_dmap);
 2222                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
 2223                 bus_dma_tag_destroy(st->stats_dtag);
 2224         }
 2225 
 2226         free(st, M_DEVBUF);
 2227 }
 2228 
 2229 static void
 2230 bwi_dma_ring_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
 2231 {
 2232         KASSERT(nseg == 1, ("too many segments\n"));
 2233         *((bus_addr_t *)arg) = seg->ds_addr;
 2234 }
 2235 
 2236 static int
 2237 bwi_dma_mbuf_create(struct bwi_softc *sc)
 2238 {
 2239         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
 2240         int i, j, k, ntx, error;
 2241 
 2242         /*
 2243          * Create TX/RX mbuf DMA tag
 2244          */
 2245         error = bus_dma_tag_create(sc->sc_parent_dtag,
 2246                                 1,
 2247                                 0,
 2248                                 BUS_SPACE_MAXADDR,
 2249                                 BUS_SPACE_MAXADDR,
 2250                                 NULL, NULL,
 2251                                 MCLBYTES,
 2252                                 1,
 2253                                 BUS_SPACE_MAXSIZE_32BIT,
 2254                                 BUS_DMA_ALLOCNOW,
 2255                                 NULL, NULL,
 2256                                 &sc->sc_buf_dtag);
 2257         if (error) {
 2258                 device_printf(sc->sc_dev, "can't create mbuf DMA tag\n");
 2259                 return error;
 2260         }
 2261 
 2262         ntx = 0;
 2263 
 2264         /*
 2265          * Create TX mbuf DMA map
 2266          */
 2267         for (i = 0; i < BWI_TX_NRING; ++i) {
 2268                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
 2269 
 2270                 for (j = 0; j < BWI_TX_NDESC; ++j) {
 2271                         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
 2272                                                   &tbd->tbd_buf[j].tb_dmap);
 2273                         if (error) {
 2274                                 device_printf(sc->sc_dev, "can't create "
 2275                                               "%dth tbd, %dth DMA map\n", i, j);
 2276 
 2277                                 ntx = i;
 2278                                 for (k = 0; k < j; ++k) {
 2279                                         bus_dmamap_destroy(sc->sc_buf_dtag,
 2280                                                 tbd->tbd_buf[k].tb_dmap);
 2281                                 }
 2282                                 goto fail;
 2283                         }
 2284                 }
 2285         }
 2286         ntx = BWI_TX_NRING;
 2287 
 2288         /*
 2289          * Create RX mbuf DMA map and a spare DMA map
 2290          */
 2291         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
 2292                                   &rbd->rbd_tmp_dmap);
 2293         if (error) {
 2294                 device_printf(sc->sc_dev,
 2295                               "can't create spare RX buf DMA map\n");
 2296                 goto fail;
 2297         }
 2298 
 2299         for (j = 0; j < BWI_RX_NDESC; ++j) {
 2300                 error = bus_dmamap_create(sc->sc_buf_dtag, 0,
 2301                                           &rbd->rbd_buf[j].rb_dmap);
 2302                 if (error) {
 2303                         device_printf(sc->sc_dev, "can't create %dth "
 2304                                       "RX buf DMA map\n", j);
 2305 
 2306                         for (k = 0; k < j; ++k) {
 2307                                 bus_dmamap_destroy(sc->sc_buf_dtag,
 2308                                         rbd->rbd_buf[j].rb_dmap);
 2309                         }
 2310                         bus_dmamap_destroy(sc->sc_buf_dtag,
 2311                                            rbd->rbd_tmp_dmap);
 2312                         goto fail;
 2313                 }
 2314         }
 2315 
 2316         return 0;
 2317 fail:
 2318         bwi_dma_mbuf_destroy(sc, ntx, 0);
 2319         return error;
 2320 }
 2321 
 2322 static void
 2323 bwi_dma_mbuf_destroy(struct bwi_softc *sc, int ntx, int nrx)
 2324 {
 2325         int i, j;
 2326 
 2327         if (sc->sc_buf_dtag == NULL)
 2328                 return;
 2329 
 2330         for (i = 0; i < ntx; ++i) {
 2331                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
 2332 
 2333                 for (j = 0; j < BWI_TX_NDESC; ++j) {
 2334                         struct bwi_txbuf *tb = &tbd->tbd_buf[j];
 2335 
 2336                         if (tb->tb_mbuf != NULL) {
 2337                                 bus_dmamap_unload(sc->sc_buf_dtag,
 2338                                                   tb->tb_dmap);
 2339                                 m_freem(tb->tb_mbuf);
 2340                         }
 2341                         if (tb->tb_ni != NULL)
 2342                                 ieee80211_free_node(tb->tb_ni);
 2343                         bus_dmamap_destroy(sc->sc_buf_dtag, tb->tb_dmap);
 2344                 }
 2345         }
 2346 
 2347         if (nrx) {
 2348                 struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
 2349 
 2350                 bus_dmamap_destroy(sc->sc_buf_dtag, rbd->rbd_tmp_dmap);
 2351                 for (j = 0; j < BWI_RX_NDESC; ++j) {
 2352                         struct bwi_rxbuf *rb = &rbd->rbd_buf[j];
 2353 
 2354                         if (rb->rb_mbuf != NULL) {
 2355                                 bus_dmamap_unload(sc->sc_buf_dtag,
 2356                                                   rb->rb_dmap);
 2357                                 m_freem(rb->rb_mbuf);
 2358                         }
 2359                         bus_dmamap_destroy(sc->sc_buf_dtag, rb->rb_dmap);
 2360                 }
 2361         }
 2362 
 2363         bus_dma_tag_destroy(sc->sc_buf_dtag);
 2364         sc->sc_buf_dtag = NULL;
 2365 }
 2366 
 2367 static void
 2368 bwi_enable_intrs(struct bwi_softc *sc, uint32_t enable_intrs)
 2369 {
 2370         CSR_SETBITS_4(sc, BWI_MAC_INTR_MASK, enable_intrs);
 2371 }
 2372 
 2373 static void
 2374 bwi_disable_intrs(struct bwi_softc *sc, uint32_t disable_intrs)
 2375 {
 2376         CSR_CLRBITS_4(sc, BWI_MAC_INTR_MASK, disable_intrs);
 2377 }
 2378 
 2379 static int
 2380 bwi_init_tx_ring32(struct bwi_softc *sc, int ring_idx)
 2381 {
 2382         struct bwi_ring_data *rd;
 2383         struct bwi_txbuf_data *tbd;
 2384         uint32_t val, addr_hi, addr_lo;
 2385 
 2386         KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
 2387         rd = &sc->sc_tx_rdata[ring_idx];
 2388         tbd = &sc->sc_tx_bdata[ring_idx];
 2389 
 2390         tbd->tbd_idx = 0;
 2391         tbd->tbd_used = 0;
 2392 
 2393         bzero(rd->rdata_desc, sizeof(struct bwi_desc32) * BWI_TX_NDESC);
 2394         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
 2395                         BUS_DMASYNC_PREWRITE);
 2396 
 2397         addr_lo = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
 2398         addr_hi = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
 2399 
 2400         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
 2401               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
 2402                         BWI_TXRX32_RINGINFO_FUNC_MASK);
 2403         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, val);
 2404 
 2405         val = __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
 2406               BWI_TXRX32_CTRL_ENABLE;
 2407         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, val);
 2408 
 2409         return 0;
 2410 }
 2411 
 2412 static void
 2413 bwi_init_rxdesc_ring32(struct bwi_softc *sc, uint32_t ctrl_base,
 2414                        bus_addr_t paddr, int hdr_size, int ndesc)
 2415 {
 2416         uint32_t val, addr_hi, addr_lo;
 2417 
 2418         addr_lo = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
 2419         addr_hi = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
 2420 
 2421         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
 2422               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
 2423                         BWI_TXRX32_RINGINFO_FUNC_MASK);
 2424         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_RINGINFO, val);
 2425 
 2426         val = __SHIFTIN(hdr_size, BWI_RX32_CTRL_HDRSZ_MASK) |
 2427               __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
 2428               BWI_TXRX32_CTRL_ENABLE;
 2429         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_CTRL, val);
 2430 
 2431         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
 2432                     (ndesc - 1) * sizeof(struct bwi_desc32));
 2433 }
 2434 
 2435 static int
 2436 bwi_init_rx_ring32(struct bwi_softc *sc)
 2437 {
 2438         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
 2439         int i, error;
 2440 
 2441         sc->sc_rx_bdata.rbd_idx = 0;
 2442 
 2443         for (i = 0; i < BWI_RX_NDESC; ++i) {
 2444                 error = bwi_newbuf(sc, i, 1);
 2445                 if (error) {
 2446                         device_printf(sc->sc_dev,
 2447                                   "can't allocate %dth RX buffer\n", i);
 2448                         return error;
 2449                 }
 2450         }
 2451         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
 2452                         BUS_DMASYNC_PREWRITE);
 2453 
 2454         bwi_init_rxdesc_ring32(sc, rd->rdata_txrx_ctrl, rd->rdata_paddr,
 2455                                sizeof(struct bwi_rxbuf_hdr), BWI_RX_NDESC);
 2456         return 0;
 2457 }
 2458 
 2459 static int
 2460 bwi_init_txstats32(struct bwi_softc *sc)
 2461 {
 2462         struct bwi_txstats_data *st = sc->sc_txstats;
 2463         bus_addr_t stats_paddr;
 2464         int i;
 2465 
 2466         bzero(st->stats, BWI_TXSTATS_NDESC * sizeof(struct bwi_txstats));
 2467         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_PREWRITE);
 2468 
 2469         st->stats_idx = 0;
 2470 
 2471         stats_paddr = st->stats_paddr;
 2472         for (i = 0; i < BWI_TXSTATS_NDESC; ++i) {
 2473                 bwi_setup_desc32(sc, st->stats_ring, BWI_TXSTATS_NDESC, i,
 2474                                  stats_paddr, sizeof(struct bwi_txstats), 0);
 2475                 stats_paddr += sizeof(struct bwi_txstats);
 2476         }
 2477         bus_dmamap_sync(st->stats_ring_dtag, st->stats_ring_dmap,
 2478                         BUS_DMASYNC_PREWRITE);
 2479 
 2480         bwi_init_rxdesc_ring32(sc, st->stats_ctrl_base,
 2481                                st->stats_ring_paddr, 0, BWI_TXSTATS_NDESC);
 2482         return 0;
 2483 }
 2484 
 2485 static void
 2486 bwi_setup_rx_desc32(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
 2487                     int buf_len)
 2488 {
 2489         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
 2490 
 2491         KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
 2492         bwi_setup_desc32(sc, rd->rdata_desc, BWI_RX_NDESC, buf_idx,
 2493                          paddr, buf_len, 0);
 2494 }
 2495 
 2496 static void
 2497 bwi_setup_tx_desc32(struct bwi_softc *sc, struct bwi_ring_data *rd,
 2498                     int buf_idx, bus_addr_t paddr, int buf_len)
 2499 {
 2500         KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
 2501         bwi_setup_desc32(sc, rd->rdata_desc, BWI_TX_NDESC, buf_idx,
 2502                          paddr, buf_len, 1);
 2503 }
 2504 
 2505 static int
 2506 bwi_init_tx_ring64(struct bwi_softc *sc, int ring_idx)
 2507 {
 2508         /* TODO:64 */
 2509         return EOPNOTSUPP;
 2510 }
 2511 
 2512 static int
 2513 bwi_init_rx_ring64(struct bwi_softc *sc)
 2514 {
 2515         /* TODO:64 */
 2516         return EOPNOTSUPP;
 2517 }
 2518 
 2519 static int
 2520 bwi_init_txstats64(struct bwi_softc *sc)
 2521 {
 2522         /* TODO:64 */
 2523         return EOPNOTSUPP;
 2524 }
 2525 
 2526 static void
 2527 bwi_setup_rx_desc64(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
 2528                     int buf_len)
 2529 {
 2530         /* TODO:64 */
 2531 }
 2532 
 2533 static void
 2534 bwi_setup_tx_desc64(struct bwi_softc *sc, struct bwi_ring_data *rd,
 2535                     int buf_idx, bus_addr_t paddr, int buf_len)
 2536 {
 2537         /* TODO:64 */
 2538 }
 2539 
 2540 static void
 2541 bwi_dma_buf_addr(void *arg, bus_dma_segment_t *seg, int nseg,
 2542                  bus_size_t mapsz __unused, int error)
 2543 {
 2544         if (!error) {
 2545                 KASSERT(nseg == 1, ("too many segments(%d)\n", nseg));
 2546                 *((bus_addr_t *)arg) = seg->ds_addr;
 2547         }
 2548 }
 2549 
 2550 static int
 2551 bwi_newbuf(struct bwi_softc *sc, int buf_idx, int init)
 2552 {
 2553         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
 2554         struct bwi_rxbuf *rxbuf = &rbd->rbd_buf[buf_idx];
 2555         struct bwi_rxbuf_hdr *hdr;
 2556         bus_dmamap_t map;
 2557         bus_addr_t paddr;
 2558         struct mbuf *m;
 2559         int error;
 2560 
 2561         KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
 2562 
 2563         m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
 2564         if (m == NULL) {
 2565                 error = ENOBUFS;
 2566 
 2567                 /*
 2568                  * If the NIC is up and running, we need to:
 2569                  * - Clear RX buffer's header.
 2570                  * - Restore RX descriptor settings.
 2571                  */
 2572                 if (init)
 2573                         return error;
 2574                 else
 2575                         goto back;
 2576         }
 2577         m->m_len = m->m_pkthdr.len = MCLBYTES;
 2578 
 2579         /*
 2580          * Try to load RX buf into temporary DMA map
 2581          */
 2582         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, rbd->rbd_tmp_dmap, m,
 2583                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
 2584         if (error) {
 2585                 m_freem(m);
 2586 
 2587                 /*
 2588                  * See the comment above
 2589                  */
 2590                 if (init)
 2591                         return error;
 2592                 else
 2593                         goto back;
 2594         }
 2595 
 2596         if (!init)
 2597                 bus_dmamap_unload(sc->sc_buf_dtag, rxbuf->rb_dmap);
 2598         rxbuf->rb_mbuf = m;
 2599         rxbuf->rb_paddr = paddr;
 2600 
 2601         /*
 2602          * Swap RX buf's DMA map with the loaded temporary one
 2603          */
 2604         map = rxbuf->rb_dmap;
 2605         rxbuf->rb_dmap = rbd->rbd_tmp_dmap;
 2606         rbd->rbd_tmp_dmap = map;
 2607 
 2608 back:
 2609         /*
 2610          * Clear RX buf header
 2611          */
 2612         hdr = mtod(rxbuf->rb_mbuf, struct bwi_rxbuf_hdr *);
 2613         bzero(hdr, sizeof(*hdr));
 2614         bus_dmamap_sync(sc->sc_buf_dtag, rxbuf->rb_dmap, BUS_DMASYNC_PREWRITE);
 2615 
 2616         /*
 2617          * Setup RX buf descriptor
 2618          */
 2619         sc->sc_setup_rxdesc(sc, buf_idx, rxbuf->rb_paddr,
 2620                             rxbuf->rb_mbuf->m_len - sizeof(*hdr));
 2621         return error;
 2622 }
 2623 
 2624 static void
 2625 bwi_set_addr_filter(struct bwi_softc *sc, uint16_t addr_ofs,
 2626                     const uint8_t *addr)
 2627 {
 2628         int i;
 2629 
 2630         CSR_WRITE_2(sc, BWI_ADDR_FILTER_CTRL,
 2631                     BWI_ADDR_FILTER_CTRL_SET | addr_ofs);
 2632 
 2633         for (i = 0; i < (IEEE80211_ADDR_LEN / 2); ++i) {
 2634                 uint16_t addr_val;
 2635 
 2636                 addr_val = (uint16_t)addr[i * 2] |
 2637                            (((uint16_t)addr[(i * 2) + 1]) << 8);
 2638                 CSR_WRITE_2(sc, BWI_ADDR_FILTER_DATA, addr_val);
 2639         }
 2640 }
 2641 
 2642 static int
 2643 bwi_rxeof(struct bwi_softc *sc, int end_idx)
 2644 {
 2645         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
 2646         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
 2647         struct ifnet *ifp = sc->sc_ifp;
 2648         struct ieee80211com *ic = ifp->if_l2com;
 2649         int idx, rx_data = 0;
 2650 
 2651         idx = rbd->rbd_idx;
 2652         while (idx != end_idx) {
 2653                 struct bwi_rxbuf *rb = &rbd->rbd_buf[idx];
 2654                 struct bwi_rxbuf_hdr *hdr;
 2655                 struct ieee80211_frame_min *wh;
 2656                 struct ieee80211_node *ni;
 2657                 struct mbuf *m;
 2658                 const void *plcp;
 2659                 uint16_t flags2;
 2660                 int buflen, wh_ofs, hdr_extra, rssi, noise, type, rate;
 2661 
 2662                 m = rb->rb_mbuf;
 2663                 bus_dmamap_sync(sc->sc_buf_dtag, rb->rb_dmap,
 2664                                 BUS_DMASYNC_POSTREAD);
 2665 
 2666                 if (bwi_newbuf(sc, idx, 0)) {
 2667                         ifp->if_ierrors++;
 2668                         goto next;
 2669                 }
 2670 
 2671                 hdr = mtod(m, struct bwi_rxbuf_hdr *);
 2672                 flags2 = le16toh(hdr->rxh_flags2);
 2673 
 2674                 hdr_extra = 0;
 2675                 if (flags2 & BWI_RXH_F2_TYPE2FRAME)
 2676                         hdr_extra = 2;
 2677                 wh_ofs = hdr_extra + 6; /* XXX magic number */
 2678 
 2679                 buflen = le16toh(hdr->rxh_buflen);
 2680                 if (buflen < BWI_FRAME_MIN_LEN(wh_ofs)) {
 2681                         if_printf(ifp, "%s: zero length data, hdr_extra %d\n",
 2682                                   __func__, hdr_extra);
 2683                         ifp->if_ierrors++;
 2684                         m_freem(m);
 2685                         goto next;
 2686                 }
 2687 
 2688                 plcp = ((const uint8_t *)(hdr + 1) + hdr_extra);
 2689                 rssi = bwi_calc_rssi(sc, hdr);
 2690                 noise = bwi_calc_noise(sc);
 2691 
 2692                 m->m_pkthdr.rcvif = ifp;
 2693                 m->m_len = m->m_pkthdr.len = buflen + sizeof(*hdr);
 2694                 m_adj(m, sizeof(*hdr) + wh_ofs);
 2695 
 2696                 if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_OFDM)
 2697                         rate = bwi_ofdm_plcp2rate(plcp);
 2698                 else
 2699                         rate = bwi_ds_plcp2rate(plcp);
 2700 
 2701                 /* RX radio tap */
 2702                 if (ieee80211_radiotap_active(ic))
 2703                         bwi_rx_radiotap(sc, m, hdr, plcp, rate, rssi, noise);
 2704 
 2705                 m_adj(m, -IEEE80211_CRC_LEN);
 2706 
 2707                 BWI_UNLOCK(sc);
 2708 
 2709                 wh = mtod(m, struct ieee80211_frame_min *);
 2710                 ni = ieee80211_find_rxnode(ic, wh);
 2711                 if (ni != NULL) {
 2712                         type = ieee80211_input(ni, m, rssi - noise, noise);
 2713                         ieee80211_free_node(ni);
 2714                 } else
 2715                         type = ieee80211_input_all(ic, m, rssi - noise, noise);
 2716                 if (type == IEEE80211_FC0_TYPE_DATA) {
 2717                         rx_data = 1;
 2718                         sc->sc_rx_rate = rate;
 2719                 }
 2720 
 2721                 BWI_LOCK(sc);
 2722 next:
 2723                 idx = (idx + 1) % BWI_RX_NDESC;
 2724 
 2725                 if (sc->sc_flags & BWI_F_STOP) {
 2726                         /*
 2727                          * Take the fast lane, don't do
 2728                          * any damage to softc
 2729                          */
 2730                         return -1;
 2731                 }
 2732         }
 2733 
 2734         rbd->rbd_idx = idx;
 2735         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
 2736                         BUS_DMASYNC_PREWRITE);
 2737 
 2738         return rx_data;
 2739 }
 2740 
 2741 static int
 2742 bwi_rxeof32(struct bwi_softc *sc)
 2743 {
 2744         uint32_t val, rx_ctrl;
 2745         int end_idx, rx_data;
 2746 
 2747         rx_ctrl = sc->sc_rx_rdata.rdata_txrx_ctrl;
 2748 
 2749         val = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
 2750         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
 2751                   sizeof(struct bwi_desc32);
 2752 
 2753         rx_data = bwi_rxeof(sc, end_idx);
 2754         if (rx_data >= 0) {
 2755                 CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_INDEX,
 2756                             end_idx * sizeof(struct bwi_desc32));
 2757         }
 2758         return rx_data;
 2759 }
 2760 
 2761 static int
 2762 bwi_rxeof64(struct bwi_softc *sc)
 2763 {
 2764         /* TODO:64 */
 2765         return 0;
 2766 }
 2767 
 2768 static void
 2769 bwi_reset_rx_ring32(struct bwi_softc *sc, uint32_t rx_ctrl)
 2770 {
 2771         int i;
 2772 
 2773         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_CTRL, 0);
 2774 
 2775 #define NRETRY 10
 2776 
 2777         for (i = 0; i < NRETRY; ++i) {
 2778                 uint32_t status;
 2779 
 2780                 status = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
 2781                 if (__SHIFTOUT(status, BWI_RX32_STATUS_STATE_MASK) ==
 2782                     BWI_RX32_STATUS_STATE_DISABLED)
 2783                         break;
 2784 
 2785                 DELAY(1000);
 2786         }
 2787         if (i == NRETRY)
 2788                 device_printf(sc->sc_dev, "reset rx ring timedout\n");
 2789 
 2790 #undef NRETRY
 2791 
 2792         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_RINGINFO, 0);
 2793 }
 2794 
 2795 static void
 2796 bwi_free_txstats32(struct bwi_softc *sc)
 2797 {
 2798         bwi_reset_rx_ring32(sc, sc->sc_txstats->stats_ctrl_base);
 2799 }
 2800 
 2801 static void
 2802 bwi_free_rx_ring32(struct bwi_softc *sc)
 2803 {
 2804         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
 2805         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
 2806         int i;
 2807 
 2808         bwi_reset_rx_ring32(sc, rd->rdata_txrx_ctrl);
 2809 
 2810         for (i = 0; i < BWI_RX_NDESC; ++i) {
 2811                 struct bwi_rxbuf *rb = &rbd->rbd_buf[i];
 2812 
 2813                 if (rb->rb_mbuf != NULL) {
 2814                         bus_dmamap_unload(sc->sc_buf_dtag, rb->rb_dmap);
 2815                         m_freem(rb->rb_mbuf);
 2816                         rb->rb_mbuf = NULL;
 2817                 }
 2818         }
 2819 }
 2820 
 2821 static void
 2822 bwi_free_tx_ring32(struct bwi_softc *sc, int ring_idx)
 2823 {
 2824         struct bwi_ring_data *rd;
 2825         struct bwi_txbuf_data *tbd;
 2826         struct ifnet *ifp = sc->sc_ifp;
 2827         uint32_t state, val;
 2828         int i;
 2829 
 2830         KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
 2831         rd = &sc->sc_tx_rdata[ring_idx];
 2832         tbd = &sc->sc_tx_bdata[ring_idx];
 2833 
 2834 #define NRETRY 10
 2835 
 2836         for (i = 0; i < NRETRY; ++i) {
 2837                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
 2838                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
 2839                 if (state == BWI_TX32_STATUS_STATE_DISABLED ||
 2840                     state == BWI_TX32_STATUS_STATE_IDLE ||
 2841                     state == BWI_TX32_STATUS_STATE_STOPPED)
 2842                         break;
 2843 
 2844                 DELAY(1000);
 2845         }
 2846         if (i == NRETRY) {
 2847                 if_printf(ifp, "%s: wait for TX ring(%d) stable timed out\n",
 2848                           __func__, ring_idx);
 2849         }
 2850 
 2851         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, 0);
 2852         for (i = 0; i < NRETRY; ++i) {
 2853                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
 2854                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
 2855                 if (state == BWI_TX32_STATUS_STATE_DISABLED)
 2856                         break;
 2857 
 2858                 DELAY(1000);
 2859         }
 2860         if (i == NRETRY)
 2861                 if_printf(ifp, "%s: reset TX ring (%d) timed out\n",
 2862                      __func__, ring_idx);
 2863 
 2864 #undef NRETRY
 2865 
 2866         DELAY(1000);
 2867 
 2868         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, 0);
 2869 
 2870         for (i = 0; i < BWI_TX_NDESC; ++i) {
 2871                 struct bwi_txbuf *tb = &tbd->tbd_buf[i];
 2872 
 2873                 if (tb->tb_mbuf != NULL) {
 2874                         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
 2875                         m_freem(tb->tb_mbuf);
 2876                         tb->tb_mbuf = NULL;
 2877                 }
 2878                 if (tb->tb_ni != NULL) {
 2879                         ieee80211_free_node(tb->tb_ni);
 2880                         tb->tb_ni = NULL;
 2881                 }
 2882         }
 2883 }
 2884 
 2885 static void
 2886 bwi_free_txstats64(struct bwi_softc *sc)
 2887 {
 2888         /* TODO:64 */
 2889 }
 2890 
 2891 static void
 2892 bwi_free_rx_ring64(struct bwi_softc *sc)
 2893 {
 2894         /* TODO:64 */
 2895 }
 2896 
 2897 static void
 2898 bwi_free_tx_ring64(struct bwi_softc *sc, int ring_idx)
 2899 {
 2900         /* TODO:64 */
 2901 }
 2902 
 2903 /* XXX does not belong here */
 2904 #define IEEE80211_OFDM_PLCP_RATE_MASK   __BITS(3, 0)
 2905 #define IEEE80211_OFDM_PLCP_LEN_MASK    __BITS(16, 5)
 2906 
 2907 static __inline void
 2908 bwi_ofdm_plcp_header(uint32_t *plcp0, int pkt_len, uint8_t rate)
 2909 {
 2910         uint32_t plcp;
 2911 
 2912         plcp = __SHIFTIN(ieee80211_rate2plcp(rate, IEEE80211_T_OFDM),
 2913                     IEEE80211_OFDM_PLCP_RATE_MASK) |
 2914                __SHIFTIN(pkt_len, IEEE80211_OFDM_PLCP_LEN_MASK);
 2915         *plcp0 = htole32(plcp);
 2916 }
 2917 
 2918 static __inline void
 2919 bwi_ds_plcp_header(struct ieee80211_ds_plcp_hdr *plcp, int pkt_len,
 2920                    uint8_t rate)
 2921 {
 2922         int len, service, pkt_bitlen;
 2923 
 2924         pkt_bitlen = pkt_len * NBBY;
 2925         len = howmany(pkt_bitlen * 2, rate);
 2926 
 2927         service = IEEE80211_PLCP_SERVICE_LOCKED;
 2928         if (rate == (11 * 2)) {
 2929                 int pkt_bitlen1;
 2930 
 2931                 /*
 2932                  * PLCP service field needs to be adjusted,
 2933                  * if TX rate is 11Mbytes/s
 2934                  */
 2935                 pkt_bitlen1 = len * 11;
 2936                 if (pkt_bitlen1 - pkt_bitlen >= NBBY)
 2937                         service |= IEEE80211_PLCP_SERVICE_LENEXT7;
 2938         }
 2939 
 2940         plcp->i_signal = ieee80211_rate2plcp(rate, IEEE80211_T_CCK);
 2941         plcp->i_service = service;
 2942         plcp->i_length = htole16(len);
 2943         /* NOTE: do NOT touch i_crc */
 2944 }
 2945 
 2946 static __inline void
 2947 bwi_plcp_header(const struct ieee80211_rate_table *rt,
 2948         void *plcp, int pkt_len, uint8_t rate)
 2949 {
 2950         enum ieee80211_phytype modtype;
 2951 
 2952         /*
 2953          * Assume caller has zeroed 'plcp'
 2954          */
 2955         modtype = ieee80211_rate2phytype(rt, rate);
 2956         if (modtype == IEEE80211_T_OFDM)
 2957                 bwi_ofdm_plcp_header(plcp, pkt_len, rate);
 2958         else if (modtype == IEEE80211_T_DS)
 2959                 bwi_ds_plcp_header(plcp, pkt_len, rate);
 2960         else
 2961                 panic("unsupport modulation type %u\n", modtype);
 2962 }
 2963 
 2964 static int
 2965 bwi_encap(struct bwi_softc *sc, int idx, struct mbuf *m,
 2966           struct ieee80211_node *ni)
 2967 {
 2968         struct ieee80211vap *vap = ni->ni_vap;
 2969         struct ifnet *ifp = sc->sc_ifp;
 2970         struct ieee80211com *ic = ifp->if_l2com;
 2971         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
 2972         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
 2973         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
 2974         struct bwi_mac *mac;
 2975         struct bwi_txbuf_hdr *hdr;
 2976         struct ieee80211_frame *wh;
 2977         const struct ieee80211_txparam *tp;
 2978         uint8_t rate, rate_fb;
 2979         uint32_t mac_ctrl;
 2980         uint16_t phy_ctrl;
 2981         bus_addr_t paddr;
 2982         int type, ismcast, pkt_len, error, rix;
 2983 #if 0
 2984         const uint8_t *p;
 2985         int i;
 2986 #endif
 2987 
 2988         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 2989             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 2990         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 2991 
 2992         wh = mtod(m, struct ieee80211_frame *);
 2993         type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
 2994         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
 2995 
 2996         /* Get 802.11 frame len before prepending TX header */
 2997         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
 2998 
 2999         /*
 3000          * Find TX rate
 3001          */
 3002         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
 3003         if (type != IEEE80211_FC0_TYPE_DATA || (m->m_flags & M_EAPOL)) {
 3004                 rate = rate_fb = tp->mgmtrate;
 3005         } else if (ismcast) {
 3006                 rate = rate_fb = tp->mcastrate;
 3007         } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
 3008                 rate = rate_fb = tp->ucastrate;
 3009         } else {
 3010                 rix = ieee80211_amrr_choose(ni, &BWI_NODE(ni)->amn);
 3011                 rate = ni->ni_txrate;
 3012 
 3013                 if (rix > 0) {
 3014                         rate_fb = ni->ni_rates.rs_rates[rix-1] &
 3015                                   IEEE80211_RATE_VAL;
 3016                 } else {
 3017                         rate_fb = rate;
 3018                 }
 3019         }
 3020         tb->tb_rate[0] = rate;
 3021         tb->tb_rate[1] = rate_fb;
 3022         sc->sc_tx_rate = rate;
 3023 
 3024         /*
 3025          * TX radio tap
 3026          */
 3027         if (ieee80211_radiotap_active_vap(vap)) {
 3028                 sc->sc_tx_th.wt_flags = 0;
 3029                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
 3030                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
 3031                 if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_DS &&
 3032                     (ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
 3033                     rate != (1 * 2)) {
 3034                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
 3035                 }
 3036                 sc->sc_tx_th.wt_rate = rate;
 3037 
 3038                 ieee80211_radiotap_tx(vap, m);
 3039         }
 3040 
 3041         /*
 3042          * Setup the embedded TX header
 3043          */
 3044         M_PREPEND(m, sizeof(*hdr), M_DONTWAIT);
 3045         if (m == NULL) {
 3046                 if_printf(ifp, "%s: prepend TX header failed\n", __func__);
 3047                 return ENOBUFS;
 3048         }
 3049         hdr = mtod(m, struct bwi_txbuf_hdr *);
 3050 
 3051         bzero(hdr, sizeof(*hdr));
 3052 
 3053         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
 3054         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
 3055 
 3056         if (!ismcast) {
 3057                 uint16_t dur;
 3058 
 3059                 dur = ieee80211_ack_duration(sc->sc_rates, rate,
 3060                     ic->ic_flags & ~IEEE80211_F_SHPREAMBLE);
 3061 
 3062                 hdr->txh_fb_duration = htole16(dur);
 3063         }
 3064 
 3065         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
 3066                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
 3067 
 3068         bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
 3069         bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
 3070 
 3071         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
 3072                              BWI_TXH_PHY_C_ANTMODE_MASK);
 3073         if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM)
 3074                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
 3075         else if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && rate != (2 * 1))
 3076                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
 3077 
 3078         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
 3079         if (!ismcast)
 3080                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
 3081         if (ieee80211_rate2phytype(sc->sc_rates, rate_fb) == IEEE80211_T_OFDM)
 3082                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
 3083 
 3084         hdr->txh_mac_ctrl = htole32(mac_ctrl);
 3085         hdr->txh_phy_ctrl = htole16(phy_ctrl);
 3086 
 3087         /* Catch any further usage */
 3088         hdr = NULL;
 3089         wh = NULL;
 3090 
 3091         /* DMA load */
 3092         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
 3093                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
 3094         if (error && error != EFBIG) {
 3095                 if_printf(ifp, "%s: can't load TX buffer (1) %d\n",
 3096                     __func__, error);
 3097                 goto back;
 3098         }
 3099 
 3100         if (error) {    /* error == EFBIG */
 3101                 struct mbuf *m_new;
 3102 
 3103                 m_new = m_defrag(m, M_DONTWAIT);
 3104                 if (m_new == NULL) {
 3105                         if_printf(ifp, "%s: can't defrag TX buffer\n",
 3106                             __func__);
 3107                         error = ENOBUFS;
 3108                         goto back;
 3109                 } else {
 3110                         m = m_new;
 3111                 }
 3112 
 3113                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
 3114                                              bwi_dma_buf_addr, &paddr,
 3115                                              BUS_DMA_NOWAIT);
 3116                 if (error) {
 3117                         if_printf(ifp, "%s: can't load TX buffer (2) %d\n",
 3118                             __func__, error);
 3119                         goto back;
 3120                 }
 3121         }
 3122         error = 0;
 3123 
 3124         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
 3125 
 3126         tb->tb_mbuf = m;
 3127         tb->tb_ni = ni;
 3128 
 3129 #if 0
 3130         p = mtod(m, const uint8_t *);
 3131         for (i = 0; i < m->m_pkthdr.len; ++i) {
 3132                 if (i != 0 && i % 8 == 0)
 3133                         printf("\n");
 3134                 printf("%02x ", p[i]);
 3135         }
 3136         printf("\n");
 3137 #endif
 3138         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
 3139                 idx, pkt_len, m->m_pkthdr.len);
 3140 
 3141         /* Setup TX descriptor */
 3142         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
 3143         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
 3144                         BUS_DMASYNC_PREWRITE);
 3145 
 3146         /* Kick start */
 3147         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
 3148 
 3149 back:
 3150         if (error)
 3151                 m_freem(m);
 3152         return error;
 3153 }
 3154 
 3155 static int
 3156 bwi_encap_raw(struct bwi_softc *sc, int idx, struct mbuf *m,
 3157           struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
 3158 {
 3159         struct ifnet *ifp = sc->sc_ifp;
 3160         struct ieee80211vap *vap = ni->ni_vap;
 3161         struct ieee80211com *ic = ni->ni_ic;
 3162         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
 3163         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
 3164         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
 3165         struct bwi_mac *mac;
 3166         struct bwi_txbuf_hdr *hdr;
 3167         struct ieee80211_frame *wh;
 3168         uint8_t rate, rate_fb;
 3169         uint32_t mac_ctrl;
 3170         uint16_t phy_ctrl;
 3171         bus_addr_t paddr;
 3172         int ismcast, pkt_len, error;
 3173 
 3174         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 3175             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 3176         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 3177 
 3178         wh = mtod(m, struct ieee80211_frame *);
 3179         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
 3180 
 3181         /* Get 802.11 frame len before prepending TX header */
 3182         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
 3183 
 3184         /*
 3185          * Find TX rate
 3186          */
 3187         rate = params->ibp_rate0;
 3188         if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
 3189                 /* XXX fall back to mcast/mgmt rate? */
 3190                 m_freem(m);
 3191                 return EINVAL;
 3192         }
 3193         if (params->ibp_try1 != 0) {
 3194                 rate_fb = params->ibp_rate1;
 3195                 if (!ieee80211_isratevalid(ic->ic_rt, rate_fb)) {
 3196                         /* XXX fall back to rate0? */
 3197                         m_freem(m);
 3198                         return EINVAL;
 3199                 }
 3200         } else
 3201                 rate_fb = rate;
 3202         tb->tb_rate[0] = rate;
 3203         tb->tb_rate[1] = rate_fb;
 3204         sc->sc_tx_rate = rate;
 3205 
 3206         /*
 3207          * TX radio tap
 3208          */
 3209         if (ieee80211_radiotap_active_vap(vap)) {
 3210                 sc->sc_tx_th.wt_flags = 0;
 3211                 /* XXX IEEE80211_BPF_CRYPTO */
 3212                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
 3213                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
 3214                 if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
 3215                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
 3216                 sc->sc_tx_th.wt_rate = rate;
 3217 
 3218                 ieee80211_radiotap_tx(vap, m);
 3219         }
 3220 
 3221         /*
 3222          * Setup the embedded TX header
 3223          */
 3224         M_PREPEND(m, sizeof(*hdr), M_DONTWAIT);
 3225         if (m == NULL) {
 3226                 if_printf(ifp, "%s: prepend TX header failed\n", __func__);
 3227                 return ENOBUFS;
 3228         }
 3229         hdr = mtod(m, struct bwi_txbuf_hdr *);
 3230 
 3231         bzero(hdr, sizeof(*hdr));
 3232 
 3233         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
 3234         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
 3235 
 3236         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
 3237         if (!ismcast && (params->ibp_flags & IEEE80211_BPF_NOACK) == 0) {
 3238                 uint16_t dur;
 3239 
 3240                 dur = ieee80211_ack_duration(sc->sc_rates, rate_fb, 0);
 3241 
 3242                 hdr->txh_fb_duration = htole16(dur);
 3243                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
 3244         }
 3245 
 3246         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
 3247                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
 3248 
 3249         bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
 3250         bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
 3251 
 3252         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
 3253                              BWI_TXH_PHY_C_ANTMODE_MASK);
 3254         if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM) {
 3255                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
 3256                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
 3257         } else if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
 3258                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
 3259 
 3260         hdr->txh_mac_ctrl = htole32(mac_ctrl);
 3261         hdr->txh_phy_ctrl = htole16(phy_ctrl);
 3262 
 3263         /* Catch any further usage */
 3264         hdr = NULL;
 3265         wh = NULL;
 3266 
 3267         /* DMA load */
 3268         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
 3269                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
 3270         if (error != 0) {
 3271                 struct mbuf *m_new;
 3272 
 3273                 if (error != EFBIG) {
 3274                         if_printf(ifp, "%s: can't load TX buffer (1) %d\n",
 3275                             __func__, error);
 3276                         goto back;
 3277                 }
 3278                 m_new = m_defrag(m, M_DONTWAIT);
 3279                 if (m_new == NULL) {
 3280                         if_printf(ifp, "%s: can't defrag TX buffer\n",
 3281                             __func__);
 3282                         error = ENOBUFS;
 3283                         goto back;
 3284                 }
 3285                 m = m_new;
 3286                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
 3287                                              bwi_dma_buf_addr, &paddr,
 3288                                              BUS_DMA_NOWAIT);
 3289                 if (error) {
 3290                         if_printf(ifp, "%s: can't load TX buffer (2) %d\n",
 3291                             __func__, error);
 3292                         goto back;
 3293                 }
 3294         }
 3295 
 3296         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
 3297 
 3298         tb->tb_mbuf = m;
 3299         tb->tb_ni = ni;
 3300 
 3301         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
 3302                 idx, pkt_len, m->m_pkthdr.len);
 3303 
 3304         /* Setup TX descriptor */
 3305         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
 3306         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
 3307                         BUS_DMASYNC_PREWRITE);
 3308 
 3309         /* Kick start */
 3310         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
 3311 back:
 3312         if (error)
 3313                 m_freem(m);
 3314         return error;
 3315 }
 3316 
 3317 static void
 3318 bwi_start_tx32(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
 3319 {
 3320         idx = (idx + 1) % BWI_TX_NDESC;
 3321         CSR_WRITE_4(sc, tx_ctrl + BWI_TX32_INDEX,
 3322                     idx * sizeof(struct bwi_desc32));
 3323 }
 3324 
 3325 static void
 3326 bwi_start_tx64(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
 3327 {
 3328         /* TODO:64 */
 3329 }
 3330 
 3331 static void
 3332 bwi_txeof_status32(struct bwi_softc *sc)
 3333 {
 3334         struct ifnet *ifp = sc->sc_ifp;
 3335         uint32_t val, ctrl_base;
 3336         int end_idx;
 3337 
 3338         ctrl_base = sc->sc_txstats->stats_ctrl_base;
 3339 
 3340         val = CSR_READ_4(sc, ctrl_base + BWI_RX32_STATUS);
 3341         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
 3342                   sizeof(struct bwi_desc32);
 3343 
 3344         bwi_txeof_status(sc, end_idx);
 3345 
 3346         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
 3347                     end_idx * sizeof(struct bwi_desc32));
 3348 
 3349         if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
 3350                 ifp->if_start(ifp);
 3351 }
 3352 
 3353 static void
 3354 bwi_txeof_status64(struct bwi_softc *sc)
 3355 {
 3356         /* TODO:64 */
 3357 }
 3358 
 3359 static void
 3360 _bwi_txeof(struct bwi_softc *sc, uint16_t tx_id, int acked, int data_txcnt)
 3361 {
 3362         struct ifnet *ifp = sc->sc_ifp;
 3363         struct bwi_txbuf_data *tbd;
 3364         struct bwi_txbuf *tb;
 3365         int ring_idx, buf_idx;
 3366         struct ieee80211_node *ni;
 3367 
 3368         if (tx_id == 0) {
 3369                 if_printf(ifp, "%s: zero tx id\n", __func__);
 3370                 return;
 3371         }
 3372 
 3373         ring_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_RING_MASK);
 3374         buf_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_IDX_MASK);
 3375 
 3376         KASSERT(ring_idx == BWI_TX_DATA_RING, ("ring_idx %d", ring_idx));
 3377         KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
 3378 
 3379         tbd = &sc->sc_tx_bdata[ring_idx];
 3380         KASSERT(tbd->tbd_used > 0, ("tbd_used %d", tbd->tbd_used));
 3381         tbd->tbd_used--;
 3382 
 3383         tb = &tbd->tbd_buf[buf_idx];
 3384         DPRINTF(sc, BWI_DBG_TXEOF, "txeof idx %d, "
 3385                 "acked %d, data_txcnt %d, ni %p\n",
 3386                 buf_idx, acked, data_txcnt, tb->tb_ni);
 3387 
 3388         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
 3389 
 3390         ni = tb->tb_ni;
 3391         if (tb->tb_ni != NULL) {
 3392                 struct bwi_node *bn = (struct bwi_node *) tb->tb_ni;
 3393                 const struct bwi_txbuf_hdr *hdr =
 3394                     mtod(tb->tb_mbuf, const struct bwi_txbuf_hdr *);
 3395 
 3396                 /* NB: update rate control only for unicast frames */
 3397                 if (hdr->txh_mac_ctrl & htole32(BWI_TXH_MAC_C_ACK)) {
 3398                         /*
 3399                          * Feed back 'acked and data_txcnt'.  Note that the
 3400                          * generic AMRR code only understands one tx rate
 3401                          * and the estimator doesn't handle real retry counts
 3402                          * well so to avoid over-aggressive downshifting we
 3403                          * treat any number of retries as "1".
 3404                          */
 3405                         ieee80211_amrr_tx_complete(&bn->amn, acked,
 3406                             data_txcnt > 1);
 3407                 }
 3408 
 3409                 /*
 3410                  * Do any tx complete callback.  Note this must
 3411                  * be done before releasing the node reference.
 3412                  */
 3413                 if (tb->tb_mbuf->m_flags & M_TXCB)
 3414                         ieee80211_process_callback(ni, tb->tb_mbuf, !acked);
 3415 
 3416                 ieee80211_free_node(tb->tb_ni);
 3417                 tb->tb_ni = NULL;
 3418         }
 3419         m_freem(tb->tb_mbuf);
 3420         tb->tb_mbuf = NULL;
 3421 
 3422         if (tbd->tbd_used == 0)
 3423                 ifp->if_timer = 0;
 3424 
 3425         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 3426 }
 3427 
 3428 static void
 3429 bwi_txeof_status(struct bwi_softc *sc, int end_idx)
 3430 {
 3431         struct bwi_txstats_data *st = sc->sc_txstats;
 3432         int idx;
 3433 
 3434         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_POSTREAD);
 3435 
 3436         idx = st->stats_idx;
 3437         while (idx != end_idx) {
 3438                 const struct bwi_txstats *stats = &st->stats[idx];
 3439 
 3440                 if ((stats->txs_flags & BWI_TXS_F_PENDING) == 0) {
 3441                         int data_txcnt;
 3442 
 3443                         data_txcnt = __SHIFTOUT(stats->txs_txcnt,
 3444                                                 BWI_TXS_TXCNT_DATA);
 3445                         _bwi_txeof(sc, le16toh(stats->txs_id),
 3446                                    stats->txs_flags & BWI_TXS_F_ACKED,
 3447                                    data_txcnt);
 3448                 }
 3449                 idx = (idx + 1) % BWI_TXSTATS_NDESC;
 3450         }
 3451         st->stats_idx = idx;
 3452 }
 3453 
 3454 static void
 3455 bwi_txeof(struct bwi_softc *sc)
 3456 {
 3457         struct ifnet *ifp = sc->sc_ifp;
 3458 
 3459         for (;;) {
 3460                 uint32_t tx_status0, tx_status1;
 3461                 uint16_t tx_id;
 3462                 int data_txcnt;
 3463 
 3464                 tx_status0 = CSR_READ_4(sc, BWI_TXSTATUS0);
 3465                 if ((tx_status0 & BWI_TXSTATUS0_VALID) == 0)
 3466                         break;
 3467                 tx_status1 = CSR_READ_4(sc, BWI_TXSTATUS1);
 3468 
 3469                 tx_id = __SHIFTOUT(tx_status0, BWI_TXSTATUS0_TXID_MASK);
 3470                 data_txcnt = __SHIFTOUT(tx_status0,
 3471                                 BWI_TXSTATUS0_DATA_TXCNT_MASK);
 3472 
 3473                 if (tx_status0 & (BWI_TXSTATUS0_AMPDU | BWI_TXSTATUS0_PENDING))
 3474                         continue;
 3475 
 3476                 _bwi_txeof(sc, le16toh(tx_id), tx_status0 & BWI_TXSTATUS0_ACKED,
 3477                     data_txcnt);
 3478         }
 3479 
 3480         if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
 3481                 ifp->if_start(ifp);
 3482 }
 3483 
 3484 static int
 3485 bwi_bbp_power_on(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
 3486 {
 3487         bwi_power_on(sc, 1);
 3488         return bwi_set_clock_mode(sc, clk_mode);
 3489 }
 3490 
 3491 static void
 3492 bwi_bbp_power_off(struct bwi_softc *sc)
 3493 {
 3494         bwi_set_clock_mode(sc, BWI_CLOCK_MODE_SLOW);
 3495         bwi_power_off(sc, 1);
 3496 }
 3497 
 3498 static int
 3499 bwi_get_pwron_delay(struct bwi_softc *sc)
 3500 {
 3501         struct bwi_regwin *com, *old;
 3502         struct bwi_clock_freq freq;
 3503         uint32_t val;
 3504         int error;
 3505 
 3506         com = &sc->sc_com_regwin;
 3507         KASSERT(BWI_REGWIN_EXIST(com), ("no regwin"));
 3508 
 3509         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
 3510                 return 0;
 3511 
 3512         error = bwi_regwin_switch(sc, com, &old);
 3513         if (error)
 3514                 return error;
 3515 
 3516         bwi_get_clock_freq(sc, &freq);
 3517 
 3518         val = CSR_READ_4(sc, BWI_PLL_ON_DELAY);
 3519         sc->sc_pwron_delay = howmany((val + 2) * 1000000, freq.clkfreq_min);
 3520         DPRINTF(sc, BWI_DBG_ATTACH, "power on delay %u\n", sc->sc_pwron_delay);
 3521 
 3522         return bwi_regwin_switch(sc, old, NULL);
 3523 }
 3524 
 3525 static int
 3526 bwi_bus_attach(struct bwi_softc *sc)
 3527 {
 3528         struct bwi_regwin *bus, *old;
 3529         int error;
 3530 
 3531         bus = &sc->sc_bus_regwin;
 3532 
 3533         error = bwi_regwin_switch(sc, bus, &old);
 3534         if (error)
 3535                 return error;
 3536 
 3537         if (!bwi_regwin_is_enabled(sc, bus))
 3538                 bwi_regwin_enable(sc, bus, 0);
 3539 
 3540         /* Disable interripts */
 3541         CSR_WRITE_4(sc, BWI_INTRVEC, 0);
 3542 
 3543         return bwi_regwin_switch(sc, old, NULL);
 3544 }
 3545 
 3546 static const char *
 3547 bwi_regwin_name(const struct bwi_regwin *rw)
 3548 {
 3549         switch (rw->rw_type) {
 3550         case BWI_REGWIN_T_COM:
 3551                 return "COM";
 3552         case BWI_REGWIN_T_BUSPCI:
 3553                 return "PCI";
 3554         case BWI_REGWIN_T_MAC:
 3555                 return "MAC";
 3556         case BWI_REGWIN_T_BUSPCIE:
 3557                 return "PCIE";
 3558         }
 3559         panic("unknown regwin type 0x%04x\n", rw->rw_type);
 3560         return NULL;
 3561 }
 3562 
 3563 static uint32_t
 3564 bwi_regwin_disable_bits(struct bwi_softc *sc)
 3565 {
 3566         uint32_t busrev;
 3567 
 3568         /* XXX cache this */
 3569         busrev = __SHIFTOUT(CSR_READ_4(sc, BWI_ID_LO), BWI_ID_LO_BUSREV_MASK);
 3570         DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_MISC,
 3571                 "bus rev %u\n", busrev);
 3572 
 3573         if (busrev == BWI_BUSREV_0)
 3574                 return BWI_STATE_LO_DISABLE1;
 3575         else if (busrev == BWI_BUSREV_1)
 3576                 return BWI_STATE_LO_DISABLE2;
 3577         else
 3578                 return (BWI_STATE_LO_DISABLE1 | BWI_STATE_LO_DISABLE2);
 3579 }
 3580 
 3581 int
 3582 bwi_regwin_is_enabled(struct bwi_softc *sc, struct bwi_regwin *rw)
 3583 {
 3584         uint32_t val, disable_bits;
 3585 
 3586         disable_bits = bwi_regwin_disable_bits(sc);
 3587         val = CSR_READ_4(sc, BWI_STATE_LO);
 3588 
 3589         if ((val & (BWI_STATE_LO_CLOCK |
 3590                     BWI_STATE_LO_RESET |
 3591                     disable_bits)) == BWI_STATE_LO_CLOCK) {
 3592                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is enabled\n",
 3593                         bwi_regwin_name(rw));
 3594                 return 1;
 3595         } else {
 3596                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is disabled\n",
 3597                         bwi_regwin_name(rw));
 3598                 return 0;
 3599         }
 3600 }
 3601 
 3602 void
 3603 bwi_regwin_disable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
 3604 {
 3605         uint32_t state_lo, disable_bits;
 3606         int i;
 3607 
 3608         state_lo = CSR_READ_4(sc, BWI_STATE_LO);
 3609 
 3610         /*
 3611          * If current regwin is in 'reset' state, it was already disabled.
 3612          */
 3613         if (state_lo & BWI_STATE_LO_RESET) {
 3614                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT,
 3615                         "%s was already disabled\n", bwi_regwin_name(rw));
 3616                 return;
 3617         }
 3618 
 3619         disable_bits = bwi_regwin_disable_bits(sc);
 3620 
 3621         /*
 3622          * Disable normal clock
 3623          */
 3624         state_lo = BWI_STATE_LO_CLOCK | disable_bits;
 3625         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
 3626 
 3627         /*
 3628          * Wait until normal clock is disabled
 3629          */
 3630 #define NRETRY  1000
 3631         for (i = 0; i < NRETRY; ++i) {
 3632                 state_lo = CSR_READ_4(sc, BWI_STATE_LO);
 3633                 if (state_lo & disable_bits)
 3634                         break;
 3635                 DELAY(10);
 3636         }
 3637         if (i == NRETRY) {
 3638                 device_printf(sc->sc_dev, "%s disable clock timeout\n",
 3639                               bwi_regwin_name(rw));
 3640         }
 3641 
 3642         for (i = 0; i < NRETRY; ++i) {
 3643                 uint32_t state_hi;
 3644 
 3645                 state_hi = CSR_READ_4(sc, BWI_STATE_HI);
 3646                 if ((state_hi & BWI_STATE_HI_BUSY) == 0)
 3647                         break;
 3648                 DELAY(10);
 3649         }
 3650         if (i == NRETRY) {
 3651                 device_printf(sc->sc_dev, "%s wait BUSY unset timeout\n",
 3652                               bwi_regwin_name(rw));
 3653         }
 3654 #undef NRETRY
 3655 
 3656         /*
 3657          * Reset and disable regwin with gated clock
 3658          */
 3659         state_lo = BWI_STATE_LO_RESET | disable_bits |
 3660                    BWI_STATE_LO_CLOCK | BWI_STATE_LO_GATED_CLOCK |
 3661                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
 3662         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
 3663 
 3664         /* Flush pending bus write */
 3665         CSR_READ_4(sc, BWI_STATE_LO);
 3666         DELAY(1);
 3667 
 3668         /* Reset and disable regwin */
 3669         state_lo = BWI_STATE_LO_RESET | disable_bits |
 3670                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
 3671         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
 3672 
 3673         /* Flush pending bus write */
 3674         CSR_READ_4(sc, BWI_STATE_LO);
 3675         DELAY(1);
 3676 }
 3677 
 3678 void
 3679 bwi_regwin_enable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
 3680 {
 3681         uint32_t state_lo, state_hi, imstate;
 3682 
 3683         bwi_regwin_disable(sc, rw, flags);
 3684 
 3685         /* Reset regwin with gated clock */
 3686         state_lo = BWI_STATE_LO_RESET |
 3687                    BWI_STATE_LO_CLOCK |
 3688                    BWI_STATE_LO_GATED_CLOCK |
 3689                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
 3690         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
 3691 
 3692         /* Flush pending bus write */
 3693         CSR_READ_4(sc, BWI_STATE_LO);
 3694         DELAY(1);
 3695 
 3696         state_hi = CSR_READ_4(sc, BWI_STATE_HI);
 3697         if (state_hi & BWI_STATE_HI_SERROR)
 3698                 CSR_WRITE_4(sc, BWI_STATE_HI, 0);
 3699 
 3700         imstate = CSR_READ_4(sc, BWI_IMSTATE);
 3701         if (imstate & (BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT)) {
 3702                 imstate &= ~(BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT);
 3703                 CSR_WRITE_4(sc, BWI_IMSTATE, imstate);
 3704         }
 3705 
 3706         /* Enable regwin with gated clock */
 3707         state_lo = BWI_STATE_LO_CLOCK |
 3708                    BWI_STATE_LO_GATED_CLOCK |
 3709                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
 3710         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
 3711 
 3712         /* Flush pending bus write */
 3713         CSR_READ_4(sc, BWI_STATE_LO);
 3714         DELAY(1);
 3715 
 3716         /* Enable regwin with normal clock */
 3717         state_lo = BWI_STATE_LO_CLOCK |
 3718                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
 3719         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
 3720 
 3721         /* Flush pending bus write */
 3722         CSR_READ_4(sc, BWI_STATE_LO);
 3723         DELAY(1);
 3724 }
 3725 
 3726 static void
 3727 bwi_set_bssid(struct bwi_softc *sc, const uint8_t *bssid)
 3728 {
 3729         struct ifnet *ifp = sc->sc_ifp;
 3730         struct bwi_mac *mac;
 3731         struct bwi_myaddr_bssid buf;
 3732         const uint8_t *p;
 3733         uint32_t val;
 3734         int n, i;
 3735 
 3736         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 3737             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 3738         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 3739 
 3740         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_BSSID, bssid);
 3741 
 3742         bcopy(IF_LLADDR(ifp), buf.myaddr, sizeof(buf.myaddr));
 3743         bcopy(bssid, buf.bssid, sizeof(buf.bssid));
 3744 
 3745         n = sizeof(buf) / sizeof(val);
 3746         p = (const uint8_t *)&buf;
 3747         for (i = 0; i < n; ++i) {
 3748                 int j;
 3749 
 3750                 val = 0;
 3751                 for (j = 0; j < sizeof(val); ++j)
 3752                         val |= ((uint32_t)(*p++)) << (j * 8);
 3753 
 3754                 TMPLT_WRITE_4(mac, 0x20 + (i * sizeof(val)), val);
 3755         }
 3756 }
 3757 
 3758 static void
 3759 bwi_updateslot(struct ifnet *ifp)
 3760 {
 3761         struct bwi_softc *sc = ifp->if_softc;
 3762         struct ieee80211com *ic = ifp->if_l2com;
 3763         struct bwi_mac *mac;
 3764 
 3765         BWI_LOCK(sc);
 3766         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 3767                 DPRINTF(sc, BWI_DBG_80211, "%s\n", __func__);
 3768 
 3769                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 3770                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 3771                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
 3772 
 3773                 bwi_mac_updateslot(mac, (ic->ic_flags & IEEE80211_F_SHSLOT));
 3774         }
 3775         BWI_UNLOCK(sc);
 3776 }
 3777 
 3778 static void
 3779 bwi_calibrate(void *xsc)
 3780 {
 3781         struct bwi_softc *sc = xsc;
 3782 #ifdef INVARIANTS
 3783         struct ifnet *ifp = sc->sc_ifp;
 3784         struct ieee80211com *ic = ifp->if_l2com;
 3785 #endif
 3786         struct bwi_mac *mac;
 3787 
 3788         BWI_ASSERT_LOCKED(sc);
 3789 
 3790         KASSERT(ic->ic_opmode != IEEE80211_M_MONITOR,
 3791             ("opmode %d", ic->ic_opmode));
 3792 
 3793         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 3794             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 3795         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 3796 
 3797         bwi_mac_calibrate_txpower(mac, sc->sc_txpwrcb_type);
 3798         sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
 3799 
 3800         /* XXX 15 seconds */
 3801         callout_reset(&sc->sc_calib_ch, hz * 15, bwi_calibrate, sc);
 3802 }
 3803 
 3804 static int
 3805 bwi_calc_rssi(struct bwi_softc *sc, const struct bwi_rxbuf_hdr *hdr)
 3806 {
 3807         struct bwi_mac *mac;
 3808 
 3809         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 3810             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 3811         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 3812 
 3813         return bwi_rf_calc_rssi(mac, hdr);
 3814 }
 3815 
 3816 static int
 3817 bwi_calc_noise(struct bwi_softc *sc)
 3818 {
 3819         struct bwi_mac *mac;
 3820 
 3821         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 3822             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 3823         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 3824 
 3825         return bwi_rf_calc_noise(mac);
 3826 }
 3827 
 3828 static __inline uint8_t
 3829 bwi_ofdm_plcp2rate(const uint32_t *plcp0)
 3830 {
 3831         uint32_t plcp;
 3832         uint8_t plcp_rate;
 3833 
 3834         plcp = le32toh(*plcp0);
 3835         plcp_rate = __SHIFTOUT(plcp, IEEE80211_OFDM_PLCP_RATE_MASK);
 3836         return ieee80211_plcp2rate(plcp_rate, IEEE80211_T_OFDM);
 3837 }
 3838 
 3839 static __inline uint8_t
 3840 bwi_ds_plcp2rate(const struct ieee80211_ds_plcp_hdr *hdr)
 3841 {
 3842         return ieee80211_plcp2rate(hdr->i_signal, IEEE80211_T_DS);
 3843 }
 3844 
 3845 static void
 3846 bwi_rx_radiotap(struct bwi_softc *sc, struct mbuf *m,
 3847     struct bwi_rxbuf_hdr *hdr, const void *plcp, int rate, int rssi, int noise)
 3848 {
 3849         const struct ieee80211_frame_min *wh;
 3850 
 3851         sc->sc_rx_th.wr_flags = IEEE80211_RADIOTAP_F_FCS;
 3852         if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_SHPREAMBLE)
 3853                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
 3854 
 3855         wh = mtod(m, const struct ieee80211_frame_min *);
 3856         if (wh->i_fc[1] & IEEE80211_FC1_WEP)
 3857                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_WEP;
 3858 
 3859         sc->sc_rx_th.wr_tsf = hdr->rxh_tsf; /* No endian convertion */
 3860         sc->sc_rx_th.wr_rate = rate;
 3861         sc->sc_rx_th.wr_antsignal = rssi;
 3862         sc->sc_rx_th.wr_antnoise = noise;
 3863 }
 3864 
 3865 static void
 3866 bwi_led_attach(struct bwi_softc *sc)
 3867 {
 3868         const uint8_t *led_act = NULL;
 3869         uint16_t gpio, val[BWI_LED_MAX];
 3870         int i;
 3871 
 3872 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
 3873 
 3874         for (i = 0; i < N(bwi_vendor_led_act); ++i) {
 3875                 if (sc->sc_pci_subvid == bwi_vendor_led_act[i].vid) {
 3876                         led_act = bwi_vendor_led_act[i].led_act;
 3877                         break;
 3878                 }
 3879         }
 3880         if (led_act == NULL)
 3881                 led_act = bwi_default_led_act;
 3882 
 3883 #undef N
 3884 
 3885         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO01);
 3886         val[0] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_0);
 3887         val[1] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_1);
 3888 
 3889         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO23);
 3890         val[2] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_2);
 3891         val[3] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_3);
 3892 
 3893         for (i = 0; i < BWI_LED_MAX; ++i) {
 3894                 struct bwi_led *led = &sc->sc_leds[i];
 3895 
 3896                 if (val[i] == 0xff) {
 3897                         led->l_act = led_act[i];
 3898                 } else {
 3899                         if (val[i] & BWI_LED_ACT_LOW)
 3900                                 led->l_flags |= BWI_LED_F_ACTLOW;
 3901                         led->l_act = __SHIFTOUT(val[i], BWI_LED_ACT_MASK);
 3902                 }
 3903                 led->l_mask = (1 << i);
 3904 
 3905                 if (led->l_act == BWI_LED_ACT_BLINK_SLOW ||
 3906                     led->l_act == BWI_LED_ACT_BLINK_POLL ||
 3907                     led->l_act == BWI_LED_ACT_BLINK) {
 3908                         led->l_flags |= BWI_LED_F_BLINK;
 3909                         if (led->l_act == BWI_LED_ACT_BLINK_POLL)
 3910                                 led->l_flags |= BWI_LED_F_POLLABLE;
 3911                         else if (led->l_act == BWI_LED_ACT_BLINK_SLOW)
 3912                                 led->l_flags |= BWI_LED_F_SLOW;
 3913 
 3914                         if (sc->sc_blink_led == NULL) {
 3915                                 sc->sc_blink_led = led;
 3916                                 if (led->l_flags & BWI_LED_F_SLOW)
 3917                                         BWI_LED_SLOWDOWN(sc->sc_led_idle);
 3918                         }
 3919                 }
 3920 
 3921                 DPRINTF(sc, BWI_DBG_LED | BWI_DBG_ATTACH,
 3922                         "%dth led, act %d, lowact %d\n", i,
 3923                         led->l_act, led->l_flags & BWI_LED_F_ACTLOW);
 3924         }
 3925         callout_init(&sc->sc_led_blink_ch, CALLOUT_MPSAFE);
 3926 }
 3927 
 3928 static __inline uint16_t
 3929 bwi_led_onoff(const struct bwi_led *led, uint16_t val, int on)
 3930 {
 3931         if (led->l_flags & BWI_LED_F_ACTLOW)
 3932                 on = !on;
 3933         if (on)
 3934                 val |= led->l_mask;
 3935         else
 3936                 val &= ~led->l_mask;
 3937         return val;
 3938 }
 3939 
 3940 static void
 3941 bwi_led_newstate(struct bwi_softc *sc, enum ieee80211_state nstate)
 3942 {
 3943         struct ifnet *ifp = sc->sc_ifp;
 3944         struct ieee80211com *ic = ifp->if_l2com;
 3945         uint16_t val;
 3946         int i;
 3947 
 3948         if (nstate == IEEE80211_S_INIT) {
 3949                 callout_stop(&sc->sc_led_blink_ch);
 3950                 sc->sc_led_blinking = 0;
 3951         }
 3952 
 3953         if ((ic->ic_ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
 3954                 return;
 3955 
 3956         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
 3957         for (i = 0; i < BWI_LED_MAX; ++i) {
 3958                 struct bwi_led *led = &sc->sc_leds[i];
 3959                 int on;
 3960 
 3961                 if (led->l_act == BWI_LED_ACT_UNKN ||
 3962                     led->l_act == BWI_LED_ACT_NULL)
 3963                         continue;
 3964 
 3965                 if ((led->l_flags & BWI_LED_F_BLINK) &&
 3966                     nstate != IEEE80211_S_INIT)
 3967                         continue;
 3968 
 3969                 switch (led->l_act) {
 3970                 case BWI_LED_ACT_ON:    /* Always on */
 3971                         on = 1;
 3972                         break;
 3973                 case BWI_LED_ACT_OFF:   /* Always off */
 3974                 case BWI_LED_ACT_5GHZ:  /* TODO: 11A */
 3975                         on = 0;
 3976                         break;
 3977                 default:
 3978                         on = 1;
 3979                         switch (nstate) {
 3980                         case IEEE80211_S_INIT:
 3981                                 on = 0;
 3982                                 break;
 3983                         case IEEE80211_S_RUN:
 3984                                 if (led->l_act == BWI_LED_ACT_11G &&
 3985                                     ic->ic_curmode != IEEE80211_MODE_11G)
 3986                                         on = 0;
 3987                                 break;
 3988                         default:
 3989                                 if (led->l_act == BWI_LED_ACT_ASSOC)
 3990                                         on = 0;
 3991                                 break;
 3992                         }
 3993                         break;
 3994                 }
 3995 
 3996                 val = bwi_led_onoff(led, val, on);
 3997         }
 3998         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
 3999 }
 4000 static void
 4001 bwi_led_event(struct bwi_softc *sc, int event)
 4002 {
 4003         struct bwi_led *led = sc->sc_blink_led;
 4004         int rate;
 4005 
 4006         if (event == BWI_LED_EVENT_POLL) {
 4007                 if ((led->l_flags & BWI_LED_F_POLLABLE) == 0)
 4008                         return;
 4009                 if (ticks - sc->sc_led_ticks < sc->sc_led_idle)
 4010                         return;
 4011         }
 4012 
 4013         sc->sc_led_ticks = ticks;
 4014         if (sc->sc_led_blinking)
 4015                 return;
 4016 
 4017         switch (event) {
 4018         case BWI_LED_EVENT_RX:
 4019                 rate = sc->sc_rx_rate;
 4020                 break;
 4021         case BWI_LED_EVENT_TX:
 4022                 rate = sc->sc_tx_rate;
 4023                 break;
 4024         case BWI_LED_EVENT_POLL:
 4025                 rate = 0;
 4026                 break;
 4027         default:
 4028                 panic("unknown LED event %d\n", event);
 4029                 break;
 4030         }
 4031         bwi_led_blink_start(sc, bwi_led_duration[rate].on_dur,
 4032             bwi_led_duration[rate].off_dur);
 4033 }
 4034 
 4035 static void
 4036 bwi_led_blink_start(struct bwi_softc *sc, int on_dur, int off_dur)
 4037 {
 4038         struct bwi_led *led = sc->sc_blink_led;
 4039         uint16_t val;
 4040 
 4041         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
 4042         val = bwi_led_onoff(led, val, 1);
 4043         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
 4044 
 4045         if (led->l_flags & BWI_LED_F_SLOW) {
 4046                 BWI_LED_SLOWDOWN(on_dur);
 4047                 BWI_LED_SLOWDOWN(off_dur);
 4048         }
 4049 
 4050         sc->sc_led_blinking = 1;
 4051         sc->sc_led_blink_offdur = off_dur;
 4052 
 4053         callout_reset(&sc->sc_led_blink_ch, on_dur, bwi_led_blink_next, sc);
 4054 }
 4055 
 4056 static void
 4057 bwi_led_blink_next(void *xsc)
 4058 {
 4059         struct bwi_softc *sc = xsc;
 4060         uint16_t val;
 4061 
 4062         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
 4063         val = bwi_led_onoff(sc->sc_blink_led, val, 0);
 4064         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
 4065 
 4066         callout_reset(&sc->sc_led_blink_ch, sc->sc_led_blink_offdur,
 4067             bwi_led_blink_end, sc);
 4068 }
 4069 
 4070 static void
 4071 bwi_led_blink_end(void *xsc)
 4072 {
 4073         struct bwi_softc *sc = xsc;
 4074         sc->sc_led_blinking = 0;
 4075 }
 4076 
 4077 static void
 4078 bwi_restart(void *xsc, int pending)
 4079 {
 4080         struct bwi_softc *sc = xsc;
 4081         struct ifnet *ifp = sc->sc_ifp;
 4082 
 4083         if_printf(ifp, "%s begin, help!\n", __func__);
 4084         BWI_LOCK(sc);
 4085         bwi_init_statechg(xsc, 0);
 4086 #if 0
 4087         bwi_start_locked(ifp);
 4088 #endif
 4089         BWI_UNLOCK(sc);
 4090 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/bwi/if_bwi.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/bwi/if_bwi.c
